CON8806 Michalewicz Scardina Understanding Oracle RAC 12c Internals

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Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 1

Understanding Oracle RAC 12c Internals Markus Michalewicz, Mark Scardina Director of Product Management

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Safe Harbor Statement

The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.


Agenda

§  Introduction §  The New Features in Oracle Grid Infrastructure and RAC 12c

–  Flex ASM –  Flex Cluster

§  Policy-Managed Databases –  Improved HA Management –  Dynamic Database Services

§  Multiple Subnet Support, Listeners & SCAN in Oracle RAC 12c

§  Summary and Q&A

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The New Oracle RAC 12c Oracle RAC 12c provides**:

1.  Better Business Continuity and High Availability (HA)

2.  Agility and Scalability

3.  Cost-effective Workload Management

Using

§  Standardized and improved deployment and management

§  A familiar and matured HA stack

Oracle Real Application Clusters (RAC)

Oracle Grid Infrastructure (GI):

Automatic Storage Management (ASM)

Oracle Clusterware (OCW)

Oracle Flex ASM

CRM

**Understanding Oracle RAC Internals 11g Rel. 2:

http://www.oracle.com/technetwork/products/clustering/overview/understandingrac11grel2internals-2010098.pdf


The Setup for this Session What has been installed and configured so far?**

vixen srvpool: frontoffice comet srvpool: backoffice

dancer srvpool: backoffice dasher srvpool: frontoffice

OS OL 6.4 OS OL 6.4

OS OL 6.4 OS OL 6.4

Oracle GI for a cluster Oracle GI for a cluster

Oracle GI for a cluster Oracle GI for a cluster

Oracle RAC Oracle RAC


raccdb1

raccdb1_2

raccdb1_1

[RAC]> srvctl status database -d raccdb1 Instance raccdb1_1 is running on node comet Instance raccdb1_2 is running on node dancer Instance raccdb1_3 is running on node vixen Instance raccdb1_4 is running on node dasher

raccdb1_4

raccdb1_3

**How did we get here: TUE, Sep 24, 10:30 AM – 11:30 AM in Moscone South - 104 (CON8805)

§  4-node cluster §  OL 6.4 UEK §  Oracle Grid Infrastructure 12c

–  Per node installation

§  Oracle RAC Database Home 12c –  Shared installation on ACFS

§  One Oracle Multitenant Container Database –  DB name: raccdb1

–  Deployed as a Policy-Managed Database

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New Memory Requirements Not an Oracle RAC internal – just something to mention

[GRID]> srvctl status asm ASM is running on comet,dasher,dancer [GRID]> srvctl status mgmtdb Database is enabled Instance -MGMTDB is running on node dasher [GRID]> ps -ef |grep pmon grid 3227 1 0 13:54 ? 00:00:02 asm_pmon_+ASM1 grid 3868 1 0 13:55 ? 00:00:01 mdb_pmon_-MGMTDB grid 7364 1 0 13:57 ? 00:00:01 apx_pmon_+APX1 oracle 7917 1 0 13:57 ? 00:00:02 ora_pmon_raccdb1_4 [RAC]> df -h Filesystem Size Used Avail Use% Mounted on ... tmpfs 1.7G 1.3G 475M 73% /dev/shm ...

Physical memory requirements with Oracle RAC 12c: 4GB


Agenda

§  Introduction

§  The New Features in Oracle Grid Infrastructure and RAC 12c –  Flex ASM –  Flex Cluster




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Oracle ASM 12c – Overview Oracle ASM 12c Standard Deployment

ASM Cluster Pool of Storage

Disk Group B Disk Group A Shared Disk Groups Wide File Striping

One to One Mapping of ASM Instances to Servers

ASM Instance

Database Instance

ASM Disk

RAC Cluster

Node4 Node3 Node2 Node1 Node5 ASM ASM ASM ASM ASM

ASM Instance

Database Instance

DBA DBA DBC DBB DBB DBB


Introducing Oracle Flex ASM Removal of One to One Mapping and HA



Databases share ASM instances

ASM Instance

Database Instance

ASM Disk

RAC Cluster

Node5 Node4 Node3 Node2 Node1

Node5 runs as ASM Client to Node4




ASM ASM ASM

ASM Instance

DBA DBA DBC DBB DBB DBB

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Supporting Pre-Oracle 12c Databases Pre-Oracle 12c Databases require a local ASM instance



Databases share ASM instances

ASM Instance

Database Instance

ASM Disk

RAC Cluster

Node5 Node4 Node3 Node2 Node1 ASM ASM ASM

DBA DBA DBC

ASM ASM

11gDB

11gDB DBB DBB DBB


Oracle Flex ASM Configuration details

§  Flex ASM introduces new local resources: –  At least one ASM listener

–  One “proxy_advm” (per node)

§  Used for ACFS access to Flex ASM instances

§  Connections from a database instance to an ASM instance are based on SQLnet using listeners.

–  The listener directs the connection to the least loaded ASM instance based on the load metric it maintains.

–  The connection details are fetched from CSS global data

–  The ASM instance to which the database instance connects to is listed in the database alert log:

§  NOTE: ASMB connected to ASM instance +ASM1 (Flex mode; client id 0x10004)

–  The userid and password supplied are also managed automatically. They are supplied while establishing the session, not while connecting.

[GRID]> crsctl stat res -t ------------------------------------------------------------------------------- Name Target State Server State details ------------------------------------------------------------------------------- Local Resources -------------------------------------------------------------------------------

ora.ASMNET1LSNR_ASM.lsnr ONLINE ONLINE comet STABLE ONLINE ONLINE dancer STABLE ONLINE ONLINE dasher STABLE ONLINE ONLINE vixen STABLE ... ora.DATA.dg ONLINE ONLINE comet STABLE ONLINE ONLINE dancer STABLE ONLINE ONLINE dasher STABLE OFFLINE OFFLINE vixen STABLE ... ora.INFRA.dg ONLINE ONLINE comet STABLE ONLINE ONLINE dancer STABLE ONLINE ONLINE dasher STABLE OFFLINE OFFLINE vixen STABLE ...

ora.proxy_advm ONLINE ONLINE comet STABLE ONLINE ONLINE dancer STABLE ONLINE ONLINE dasher STABLE ONLINE ONLINE vixen STABLE

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Oracle Flex ASM Administering Flex ASM

§  Check ASM mode using asmcmd

§  Check where ASM instances are running using srvctl

§  Check the configuration of ASM using srvctl

§  Modify the ASM configuration using srvctl

§  Cluster ASM listener: –  Flex ASM can have its own network or overlap with the

private interconnect network used by RAC DB instances

–  It is recommended to configure a full overlap of the private interconnect and the ASM network in current use cases:

[GRID]> asmcmd ASMCMD> showclustermode ASM cluster : Flex mode enabled

[GRID]> srvctl status asm ASM is running on comet,dasher,dancer

[GRID]> srvctl config asm -detail ASM home: /u01/app/12.1.0/grid Password file: +INFRA/orapwASM ASM listener: LISTENER ASM is enabled. ASM instance count: 3

Cluster ASM listener: ASMNET1LSNR_ASM,ASMNET2LSNR_ASM

[GRID]> srvctl modify asm -count all

[GRID]> srvctl status asm ASM is running on comet,dasher,dancer

[GRID]> srvctl start asm

[GRID]> srvctl status asm ASM is running on comet,vixen,dasher,dancer

Test scenarios attached

**More on Flex ASM: THU, Sep 26, 12:30 PM - 1:30 PM in Moscone South - 103 (CON8818)


Oracle Flex ASM Some test scenarios…

§  A failure of an ASM instance is without effect for the databases using ASM disk groups (here: -MGMTDB)

–  If an ASM instance is running on all nodes (count all) the ASM instance is restarted upon failure

–  If an ASM instance is running on a subset of nodes the ASM instance might be restarted on another node

–  The client using the ASM instance may change

§  A failure of an ASM instance is without effect for the APX (ADVM proxy) running on the same node

§  A failure of the APX will lead to a restart of the database instance (on the node) that uses an ACFS file system.

§  More information: –  http://docs.oracle.com/cd/E16655_01/server.121/e17612/

asminst.htm#OSTMG95329

[GRID]> ps -ef |grep pmon grid 3840 1 0 09:11 ? 00:00:01 mdb_pmon_-MGMTDB grid 4093 1 0 11:35 ? 00:00:00 asm_pmon_+ASM1 grid 4548 1 0 11:36 ? 00:00:00 apx_pmon_+APX1 oracle 5092 1 0 11:36 ? 00:00:00 ora_pmon_raccdb1_4 [GRID]> kill -9 4093 [GRID]> ps -ef |grep pmon grid 3840 1 0 09:11 ? 00:00:01 mdb_pmon_-MGMTDB grid 4548 1 0 11:36 ? 00:00:00 apx_pmon_+APX1 oracle 5092 1 0 11:36 ? 00:00:00 ora_pmon_raccdb1_4

[GRID]> ps -ef |grep pmon grid 3840 1 0 09:11 ? 00:00:01 mdb_pmon_-MGMTDB grid 4548 1 0 11:36 ? 00:00:00 apx_pmon_+APX1 oracle 5092 1 0 11:36 ? 00:00:00 ora_pmon_raccdb1_4 grid 5748 1 0 11:39 ? 00:00:00 asm_pmon_+ASM1 grid 5793 19013 0 11:39 pts/1 00:00:00 grep pmon

[GRID]> asmcmd lsct data DB_Name Status Software_Version Compatible_version Instance_Name Disk_Group +APX CONNECTED 12.1.0.1.0 12.0.0.0.0 +APX1 DATA

[GRID]> ssh vixen /u01/app/12.1.0/grid/bin/asmcmd lsct data DB_Name Status Software_Version Compatible_version Instance_Name Disk_Group +APX CONNECTED 12.1.0.1.0 12.0.0.0.0 +APX2 DATA +APX CONNECTED 12.1.0.1.0 12.0.0.0.0 +APX3 DATA

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New in Oracle Grid Infrastructure 12c Oracle Flex Cluster for better resource management

DB A DB A

DB A DB B

DB B

Hub Nodes

Leaf Nodes

§  Oracle Flex Cluster**: –  The new standard for flexible

resource management in the cluster §  Use it as demand requires it

§  Requires Oracle Flex ASM to be enabled §  Enables policy-managed clusters.

–  Efficient High Availability and resource management across tiers

§  Lightweight cluster stack on leaf nodes

–  Benefit from virtualization and physical deployments in one cluster

**More on Oracle Flex Custer: TUE, Sep 24, 12:00 PM - 1:00 PM in Moscone South - 104 (CON8809)


Oracle Flex Cluster Some configuration details

§  Oracle Flex Cluster –  Will be the basis for more uses cases

in future releases (for resource mgmt)

–  Can consist of only HUB-nodes

–  If a Leaf-node has access to shared storage, it can perform a role change to a HUB-node

–  A Standard Cluster can be converted to a Flex Cluster at any time after the installation

–  Once a cluster is configured as a Flex Cluster this configuration is irreversible without a re- configuration of the cluster.

§  More Information: –  http://docs.oracle.com/cd/E16655_01/rac.121/e17886/

bigcluster.htm#CWADD92560

[GRID]> crsctl get cluster mode config Cluster is configured as "standard" [GRID]> crsctl get cluster mode status Cluster is running in "standard" mode [GRID]> olsnodes -s -a -t dasher Active Hub Unpinned vixen Active Hub Unpinned dancer Active Hub Unpinned comet Active Hub Unpinned

•  Not a Flex Cluster yet. •  An all-Hub Flex Cluster is

basically a Standard Cluster

Example attached

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Oracle Flex Cluster Converting to Flex Cluster


bigcluster.htm#CHDJGBII

§  Flex Cluster implementations require GNS

§  Converting a Flex Cluster requires a cluster restart –  Use “crsctl stop crs” followed by “crsctl start crs” as root

–  Hence the difference between “status” and “config”

–  Nodes can be restarted in a rolling fashion:

[GRID]> srvctl config gns PRKF-1110 : Neither GNS server nor GNS client is configured on this cluster [GRID]> more /etc/hosts |grep gns 10.1.1.99 mygns mygns.localdomain #Change to root [GRID]> su Password: [GRID]> srvctl add gns -vip mygns [GRID]> srvctl start gns [GRID]> crsctl set cluster mode flex Cluster mode set to "flex » [GRID]> crsctl get cluster mode status Cluster is running in "standard" mode [GRID]> crsctl get cluster mode config Cluster is configured as "flex"

[GRID]> date ; hostname ; crsctl get cluster mode status Sat Sep 14 14:43:45 PDT 2013 dasher Cluster is running in "flex" mode

[GRID]> date ; hostname ; crsctl get cluster mode status Sat Sep 14 14:43:37 PDT 2013 dancer Cluster is running in "standard" mode


Oracle Flex Cluster Standard to Flex Cluster conversion – what has changed?

vixen srvpool: frontoffice comet srvpool: backoffice

dancer srvpool: backoffice dasher srvpool: frontoffice Oracle GI | HUB Oracle GI | HUB

Oracle GI | HUB Oracle GI | HUB



raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

raccdb1_1

[GRID]> crsctl get cluster mode status Cluster is running in "flex" mode [GRID]> olsnodes -a -s -t dasher Active Hub Unpinned vixen Active Hub Unpinned dancer Active Hub Unpinned comet Active Hub Unpinned [RAC]> srvctl status database -d raccdb1 Instance raccdb1_1 is running on node comet Instance raccdb1_2 is running on node dancer Instance raccdb1_3 is running on node vixen Instance raccdb1_4 is running on node dasher

§  Nothing at first glance… –  An all-Hub Flex Cluster behaves

like a Standard Cluster

–  When converting from Standard Cluster all nodes are converted into HUB-nodes

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Oracle Flex Cluster Flexibility and High Availability as demand requires it

§  Flex Cluster utilizes two types of cluster nodes: –  Hub nodes

§  Traditional nodes, tightly coupled via network and storage, used for running IO intensive workload

–  Leaf nodes

§  A new type of node that runs a lighter weight stack

§  Maintain their own failure and heartbeat settings

§  Do not require direct shared storage connectivity

§  Used for processing oriented (application) workload Hub Nodes

Leaf Nodes


Oracle Flex Cluster Changing node roles – server vixen becomes a Leaf node


bigcluster.htm#BABHCEAE

[GRID]> hostname vixen [GRID]> srvctl config vip -node vixen VIP exists: network number 1, hosting node vixen VIP Name: vixen-vip VIP IPv4 Address: 10.1.1.33 VIP IPv6 Address: [GRID]> crsctl get node role config Node 'vixen' configured role is 'hub' #Change to root … [GRID]> su Password: [GRID]> crsctl set node role leaf CRS-4408: Node 'vixen' configured role successfully changed; restart Oracle High Availability Services for new role to take effect.

[GRID]> crsctl stop crs [GRID]> crsctl start crs

[GRID]> crsctl get node role config Node 'vixen' configured role is 'leaf' [GRID]> srvctl config vip -node vixen VIP exists: network number 1, hosting node vixen VIP Name: vixen-vip VIP IPv4 Address: 10.1.1.33 VIP IPv6 Address:

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Oracle Flex Cluster Node role change to Leaf – what has changed?

vixen srvpool: FREE comet srvpool: backoffice


Oracle GI | LEAF Oracle GI | HUB



raccdb1

raccdb1_4 raccdb1_2

raccdb1_1 [RAC]> srvctl status database -d raccdb1 Instance raccdb1_1 is running on node comet Instance raccdb1_2 is running on node dancer Instance raccdb1_4 is running on node dasher [RAC]> srvctl status server -servers vixen -detail Server active pools: Free Server name: vixen Server state: ONLINE Server state details:

§  Server vixen has converted to a Leaf node §  Leaf nodes do not host DB instances in 12.1 §  Server vixen moved to Server Pool “FREE” as

Server Pool “frontoffice” is a database pool –  Note: all nodes in this example have access

to shared storage, which means only the node role changes – storage access is preserved.

Example attached


Oracle Flex Cluster Revert role change – server vixen becomes a HUB again

comet srvpool: backoffice


Oracle GI | HUB


Oracle RAC

raccdb1

raccdb1_4 raccdb1_2

raccdb1_1

vixen srvpool: frontoffice Oracle GI | HUB

Oracle RAC

raccdb1_3

#As root [GRID]> crsctl set node role hub CRS-4408: Node 'vixen' configured role successfully changed; restart Oracle High Availability Services for new role to take effect. [GRID]> crsctl stop crs [GRID]> crsctl start crs [RAC]> srvctl status database -d raccdb1 Instance raccdb1_1 is running on node comet Instance raccdb1_2 is running on node dancer Instance raccdb1_3 is running on node vixen Instance raccdb1_4 is running on node dasher

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Agenda

§  Introduction






Policy-Managed Databases with Oracle RAC 12c Adding another dimension – Database Services

vixen srvpool: frontoffice


Oracle GI | HUB


Oracle RAC

raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

[GRID]> srvctl status serverpool Server pool name: frontoffice Active Servers count: 2 Server pool name: backoffice Active Servers count: 2 [RAC]> srvctl status service -d raccdb1 Service crmsvc is running on nodes: dasher,vixen Service hrsvc is running on nodes: comet,dancer

§  Database Services –  Ensure that workload is hosted in the respective

server pool with the cardinality defined as part of the policy definition.

comet srvpool: backoffice Oracle GI | HUB

Oracle RAC

raccdb1_1

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Policy-Managed Databases with Oracle RAC 12c Improved HA Management - Startup

raccdb1

[GRID]> srvctl config serverpool Server pool name: frontoffice Importance: 10, Min: 2, Max 2 Server pool name: backoffice Importance: 5, Min: 1, Max 1 Server pool name: Free Importance: 0, Min: 0, Max -1

§  Defining a Service Startup Order –  Ensure services are started in specified groups

and specified order.

–  Leverages Serverpool Min and Importance properties

dasher srvpool: frontoffice Oracle GI | HUB

Oracle RAC

raccdb1_4

1st


Oracle RAC

raccdb1_3

2nd


Oracle RAC

raccdb1_1

4th

dancer srvpool: backoffice Oracle GI | HUB

Oracle RAC

raccdb1_2

3rd



Oracle RAC

raccdb1_2

dancer srvpool: frontoffice Oracle GI | HUB

Oracle RAC

raccdb1_2

Policy-Managed Databases with Oracle RAC 12c Improved HA Management – New Failover Strategy

raccdb1

[GRID]> srvctl config serverpool Server pool name: frontoffice Importance: 10, Min: 2, Max 2 Server pool name: backoffice Importance: 5, Min: 1, Max 1 [GRID]> srvctl status serverpool Server pool name: frontoffice Active Servers count: 2 Server pool name: backoffice Active Servers count: 1


Oracle RAC

raccdb1_4


Oracle RAC

raccdb1_3


Oracle RAC

raccdb1_1

§  Servers “Move” to Replace Failed node –  Protects against cascade failures due to load

–  Ensures workload isolation between pools

–  Less important workloads shutdown transactionally

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Oracle RAC

raccdb1_2


Oracle RAC

raccdb1_2

Policy-Managed Databases with Oracle RAC 12c Improved HA Management – Manage Last Service Standing

raccdb1

[RAC]> srvctl config serverpool Server pool name: frontoffice Importance: 10, Min: 2, Max 2 Server pool name: backoffice Importance: 5, Min: 1, Max 1 [RAC]> srvctl status service –db Service crmsrv is running on nodes comet,vixen Service hrsvc is not running


Oracle RAC

raccdb1_4


Oracle RAC

raccdb1_3


Oracle RAC

raccdb1_1

§  Business Critical Services survive multiple failures –  Most important pool always gets the servers

–  Services preserved across multiple failures

–  Less important workloads shutdown transactionally

comet srvpool: frontoffice Oracle GI | HUB

Oracle RAC

raccdb1_1


Policy-Managed Databases with Oracle RAC 12c Improved HA Management – Dynamic Provisioning

vixen srvpool: frontoffice


Oracle GI | HUB


Oracle RAC

raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

[GRID]> srvctl modify serverpool –serverpool backoffice –max 1 [RAC]> srvctl config serverpool Server pool name: frontoffice Importance: 10, Min: 2, Max 4 Server pool name: backoffice Importance: 5, Min: 1, Max 1 [RAC]> srvctl status service –db Service crmsrv is running on nodes dasher,dancer,vixen Service hrsvc is not running


Oracle RAC

raccdb1_1

§  Add Servers Just-In Time to meet demand –  Server Pools sized via Min and Max properties

–  Dynamically controlled by QoS Management

–  Planned control via Clusterware or QoSM Policies


Oracle RAC

raccdb1_2

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Agenda

§  Introduction






Policy-Management with Oracle RAC 12c Support for Multiple Policies tracking business objectives

§  More Information: –  http://docs.oracle.com/cd/E16655_01/rac.121/e17886/pbmgmt.htm

§  New in Oracle Grid Infrastructure 12c –  Server Categories

§  Server Categories use server attributes to allow for an active use of differently sized servers

–  Policy Sets §  Policy Sets allow for dynamic adjustment

to demand changes in an atomic transaction

Server Categories •  NAME •  ACL •  EXPRESSION •  …

Server Attributes •  NAME •  MEMORY_SIZE •  CPU_COUNT •  CPU_CLOCK_RATE •  CPU_HYPERTHREADING •  CPU_EQUIVALENCY • …

[GRID]> crsctl modify policyset –attr "LAST_ACTIVATED_POLICY=NightTime“ CRS-2673: Attempting to stop 'ora.raccdb1.crmsvc.svc' on 'comet' CRS-2673: Attempting to stop 'ora.raccdb1.crmsvc.svc' on 'dancer' CRS-2677: Stop of 'ora.raccdb1.crmsvc.svc' on 'comet' succeeded CRS-2673: Attempting to start 'ora.raccdb1.backup.svc' on 'comet' CRS-2677: Stop of 'ora.raccdb1.crmsvc.svc' on 'dancer' succeeded CRS-2672: Attempting to start 'ora.raccdb1.hrsvc.svc' on 'dancer‘

…

QoS Management

OR Oracle Clusterware - CRSCTL

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Policy-Management with Oracle RAC 12c Setting up policy sets – Provision Server Pools and creating a PolicySet

§  Add another server pool “backup”

§  Set up policy set with 3 server pools & 3 policies as follows: –  DayTime:

§  frontoffice uses three servers (MIN_SIZE=3)

§  backoffice uses one server (MIN_SIZE=1)

§  backup does not run during daytime (MIN_SIZE=0)

–  NightTime:

§  frontoffice uses one server (MIN_SIZE=1)

§  backoffice uses two servers (MIN_SIZE=2)

§  backup uses only one server (MIN_SIZE=1)

–  Weekend:

§  frontoffice uses one server (MIN_SIZE=1)

§  backoffice uses one server (MIN_SIZE=1)

§  backup uses two servers (MIN_SIZE=2)

[GRID]> srvctl add serverpool –serverpool backup –min 0 –max 2 –importance 20 [GRID] srvctl status serverpool Server pool name: frontoffice Active Servers count: 3 Server pool name: backoffice Active Servers count: 1 Server pool name: backup Active Servers count: 0

[GRID]> crsctl modify policyset -file /u01/app/…/policyset.txt


Policy-Management with Oracle RAC 12c Using Policy Sets – part 1: Activate a policy

§  Activate the policy for the weekend

[GRID]> crsctl modify policyset -attr "LAST_ACTIVATED_POLICY=Weekend" [GRID]> srvctl config serverpool Server pool name: Free Importance: 0, Min: 0, Max: -1 Category: Candidate server names: Server pool name: Generic Importance: 0, Min: 0, Max: -1 Category: Candidate server names: Server pool name: backoffice Importance: 0, Min: 1, Max: 1 Category: Candidate server names: Server pool name: backup Importance: 1, Min: 2, Max: 2 Category: Candidate server names: Server pool name: frontoffice Importance: 0, Min: 1, Max: 1 Category: Candidate server names:

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Policy-Management with Oracle RAC 12c Using Policy Sets – part 2: check the result

vixen srvpool: frontoffice comet srvpool: backup

dancer srvpool: backup dasher srvpool: backoffice Oracle GI | HUB Oracle GI | HUB




raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

raccdb1_1

[RAC]> srvctl status database -d raccdb1 Instance raccdb1_1 is running on node comet Instance raccdb1_2 is running on node dancer Instance raccdb1_3 is running on node vixen Instance raccdb1_4 is running on node dasher [RAC]> srvctl status service -d raccdb1 Service backup is running on nodes: comet,dancer Service crmsvc is running on nodes: vixen Service hrsvc is running on nodes: dasher

§  With an activated weekend policy


Policy-Management with Oracle RAC 12c Adding Server Categories to the picture – part 1

§  Assume you have 2 servers that have better IO –  Use these servers for backups whenever possible

§  Here comet and dancer have better IO by definition

§  What you need to do: –  Set up a server category that identifies the servers

–  Add the use of the server category to the server pool §  Define the server pools that utilize the category

and during which policy activation it shall be used.

§  You need to restart the cluster stack on the servers that you modify in this fashion

[GRID]> su Password: [GRID]> crsctl set server label IOplus ... #On dancer [GRID]> crsctl set server label Ioplus [GRID]> crsctl get server label CRS-4972: Current SERVER_LABEL parameter value is Ioplus [GRID]> crsctl status server comet dancer –f Comet Dancer

NAME=comet MEMORY_SIZE=3338 CPU_COUNT=1 CPU_CLOCK_RATE=2132 CPU_HYPERTHREADING=0 CPU_EQUIVALENCY=1000 DEPLOYMENT=other CONFIGURED_CSS_ROLE=hub RESOURCE_USE_ENABLED=1 SERVER_LABEL=IOplus ...

NAME=dancer MEMORY_SIZE=3338 CPU_COUNT=1 CPU_CLOCK_RATE=2247 CPU_HYPERTHREADING=0 CPU_EQUIVALENCY=1000 DEPLOYMENT=other CONFIGURED_CSS_ROLE=hub RESOURCE_USE_ENABLED=1 SERVER_LABEL=IOplus ...

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Policy-Management with Oracle RAC 12c Adding Server Categories to the picture – part 2

§  What you need to do: –  Set up a server category that identifies the servers -

done –  Add the use of the server category to the server pool

§  Define the server pools that utilize the category and during which policy activation it shall be used

§  Note: Add the server category usage to the server pool(s) that require it & specify the policies that should be altered accordingly

–  In this example the backup server pool is the one that will benefit the most and the policies will only start this server pool as required.

[GRID]> crsctl add category moreIO –attr "EXPRESSION='SERVER_LABEL co IOplus'" [GRID]> crsctl status category moreIO NAME=moreIO ACL=owner:grid:rwx,pgrp:oinstall:rwx,other::r-- ACTIVE_CSS_ROLE=hub EXPRESSION=(SERVER_LABEL co IOplus) [GRID]> crsctl modify serverpool ora.backup -attr "SERVER_CATEGORY=moreIO" -all_policies


Policy-Management with Oracle RAC 12c Adding Server Categories to the picture – comparison

Before After

[GRID]> crsctl status policy DayTime POLICY NAME=DayTime DESCRIPTION= SERVERPOOL NAME=Free ... SERVERPOOL NAME=ora.backoffice IMPORTANCE=0 MAX_SIZE=1 MIN_SIZE=1 SERVER_CATEGORY= SERVER_NAMES= SERVERPOOL NAME=ora.backup IMPORTANCE=0 MAX_SIZE=0 MIN_SIZE=0 SERVER_CATEGORY= SERVER_NAMES= SERVERPOOL NAME=ora.frontoffice IMPORTANCE=0 MAX_SIZE=3 MIN_SIZE=3 SERVER_CATEGORY= SERVER_NAMES=

[GRID]> crsctl status policy DayTime POLICY NAME=DayTime DESCRIPTION= SERVERPOOL NAME=Free ... SERVERPOOL NAME=ora.backoffice IMPORTANCE=0 MAX_SIZE=1 MIN_SIZE=1 SERVER_CATEGORY= SERVER_NAMES= SERVERPOOL NAME=ora.backup IMPORTANCE=0 MAX_SIZE=0 MIN_SIZE=0 SERVER_CATEGORY=moreIO SERVER_NAMES= SERVERPOOL NAME=ora.frontoffice IMPORTANCE=0 MAX_SIZE=3 MIN_SIZE=3 SERVER_CATEGORY= SERVER_NAMES=

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Policy-Management with Oracle RAC 12c Using Policy Sets and the effect of Server Categories






raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

raccdb1_1

vixen srvpool: backoffice comet srvpool: frontoffice

dancer srvpool: frontoffice dasher srvpool: frontoffice Oracle GI | HUB Oracle GI | HUB




raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

raccdb1_1


[GRID]> crsctl modify policyset –attr "LAST_ACTIVATED_POLICY=DayTime“ [GRID] srvctl status serverpool Server pool name: frontoffice Active Servers count: 3 Server pool name: backoffice Active Servers count: 1 Server pool name: backup Active Servers count: 0

[RAC]> srvctl status service -d raccdb1 Service backup is not running. Service crmsvc is running on nodes: dasher,vixen,comet Service hrsvc is running on nodes: dancer

Policy-Management with Oracle RAC 12c Using Policy Sets means changing policies on a push of a button

raccdb1


Oracle RAC

raccdb1_3


Oracle RAC

raccdb1_4

comet srvpool: backup Oracle GI | HUB

Oracle RAC

raccdb1_1

dancer srvpool: backup Oracle GI | HUB

Oracle RAC

raccdb1_2


Oracle RAC

raccdb1_2

comet srvpool: frontoffice Oracle GI | HUB

Oracle RAC

raccdb1_1

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Policy-Management with Oracle RAC 12c Using Policy Sets – changing policies on the push of a button is fast …






raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

raccdb1_1

vixen srvpool: backoffice comet srvpool: frontoffice

dancer srvpool: frontoffice dasher srvpool: frontoffice Oracle GI | HUB Oracle GI | HUB




raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

raccdb1_1

[GRID]> date; crsctl modify policyset -attr "LAST_ACTIVATED_POLICY=DayTime"; date Mon Sep 16 19:26:42 PDT 2013 CRS-2673: Attempting to stop 'ora.raccdb1.backup.svc' on 'dancer' CRS-2673: Attempting to stop 'ora.raccdb1.backup.svc' on 'comet' CRS-2677: Stop of 'ora.raccdb1.backup.svc' on 'dancer' succeeded CRS-2677: Stop of 'ora.raccdb1.backup.svc' on 'comet' succeeded CRS-2672: Attempting to start 'ora.raccdb1.crmsvc.svc' on 'dancer' CRS-2672: Attempting to start 'ora.raccdb1.crmsvc.svc' on 'comet' CRS-2676: Start of 'ora.raccdb1.crmsvc.svc' on 'dancer' succeeded CRS-2676: Start of 'ora.raccdb1.crmsvc.svc' on 'comet' succeeded Mon Sep 16 19:26:43 PDT 2013 è Time to execute: 1 second!


Policy-Management with Oracle RAC 12c What-If evaluation of policy changes

[RAC]> srvctl status service -d raccdb1 Service backup is not running. Service crmsvc is running on nodes: dancer,vixen,dasher Service hrsvc is running on nodes: comet [GRID]> crsctl eval activate policy Weekend Stage Group 1: ------------------------------------------------------------------------------- Stage Number Required Action ------------------------------------------------------------------------------- 1 Y Server 'comet' will be moved from pools [ora.frontoffice] to pools [ora.backup] Y Server 'dancer' will be moved from pools [ora.frontoffice] to pools [ora.backup] Y Resource 'ora.raccdb1.crmsvc.svc' (1/1) will be in state [OFFLINE] Y Resource 'ora.raccdb1.crmsvc.svc' (2/1) will be in state [OFFLINE] 2 Y Resource 'ora.raccdb1.backup.svc' (1/1) will be in state [ONLINE|INTERMEDIATE] on server[comet] Y Resource 'ora.raccdb1.backup.svc' (2/1) will be in state [ONLINE|INTERMEDIATE] on server [dancer]

vixen srvpool: frontoffice comet srvpool: frontoffice





raccdb1

raccdb1_3

raccdb1_4 raccdb1_2

raccdb1_1

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What-If with Oracle RAC 12c What-If evaluation of policy changes – in various levels

[RAC]> srvctl status service -d raccdb1 Service backup is not running. Service crmsvc is running on nodes: dancer,vixen,dasher Service hrsvc is running on nodes: comet [GRID]> crsctl eval activate policy Weekend -admin -l 'serverpools' NAME = Free ACTIVE_SERVERS = NAME = Generic ACTIVE_SERVERS = NAME = ora.backoffice ACTIVE_SERVERS = vixen NAME = ora.backup ACTIVE_SERVERS = comet dancer NAME = ora.frontoffice ACTIVE_SERVERS = dasher

[RAC]> srvctl status service -d raccdb1 Service backup is not running. Service crmsvc is running on nodes: dancer,vixen,dasher Service hrsvc is running on nodes: comet [GRID]> crsctl eval activate policy Weekend -admin -l 'resources' -------------------------------------------------------------------------------- Name Target State Server Effect -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.mgmtdb 1 ONLINE ONLINE dasher ora.raccdb1.backup.svc 1 ONLINE ONLINE comet Started 2 ONLINE ONLINE dancer Started ora.raccdb1.crmsvc.svc 1 ONLINE OFFLINE Stopped 2 ONLINE OFFLINE Stopped 3 ONLINE ONLINE dasher ora.raccdb1.db 1 ONLINE ONLINE comet 2 ONLINE ONLINE dancer 3 ONLINE ONLINE vixen 4 ONLINE ONLINE dasher ora.raccdb1.hrsvc.svc 1 ONLINE ONLINE vixen 2 ONLINE OFFLINE --------------------------------------------------------------------------------


Policy-Management with Oracle RAC 12c Information on each step on the way

Before After

[GRID]> crsctl modify policyset -attr "LAST_ACTIVATED_POLICY=NightTime“ CRS-2673: Attempting to stop 'ora.raccdb1.crmsvc.svc' on 'dancer' CRS-2673: Attempting to stop 'ora.raccdb1.crmsvc.svc' on 'comet' CRS-2677: Stop of 'ora.raccdb1.crmsvc.svc' on 'dancer' succeeded CRS-2677: Stop of 'ora.raccdb1.crmsvc.svc' on 'comet' succeeded CRS-2672: Attempting to start 'ora.raccdb1.backup.svc' on 'dancer' CRS-2672: Attempting to start 'ora.raccdb1.backup.svc' on 'comet' CRS-2676: Start of 'ora.raccdb1.backup.svc' on 'dancer' succeeded CRS-2676: Start of 'ora.raccdb1.backup.svc' on 'comet' succeeded

[GRID]> crsctl modify policyset -attr "LAST_ACTIVATED_POLICY=DayTime" CRS-2673: Attempting to stop 'ora.raccdb1.backup.svc' on 'dancer' CRS-2673: Attempting to stop 'ora.raccdb1.backup.svc' on 'comet' CRS-2677: Stop of 'ora.raccdb1.backup.svc' on 'dancer' succeeded CRS-2677: Stop of 'ora.raccdb1.backup.svc' on 'comet' succeeded CRS-2672: Attempting to start 'ora.raccdb1.crmsvc.svc' on 'dancer' CRS-2672: Attempting to start 'ora.raccdb1.crmsvc.svc' on 'comet' CRS-2676: Start of 'ora.raccdb1.crmsvc.svc' on 'dancer' succeeded CRS-2676: Start of 'ora.raccdb1.crmsvc.svc' on 'comet' succeeded

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Agenda

§  Introduction






Multiple Subnet Support in Oracle RAC 12c Preparing for multiple subnet usage – part 1

§  Multiple subnet support was introduced with Oracle RAC 11g Rel. 2

–  Using multiple subnets per cluster can come in handy for various reasons – backups for example.

vixen comet Oracle GI | HUB Oracle GI | HUB


ora.net1.network ora.net1.network

[GRID]> crsctl stat res ora.net1.network -t ------------------------------------------------------------------------ Name Target State Server State details ------------------------------------------------------------------------ Local Resources ------------------------------------------------------------------------ ora.net1.network ONLINE ONLINE comet STABLE ONLINE ONLINE dancer STABLE ONLINE ONLINE dasher STABLE ONLINE ONLINE vixen STABLE ------------------------------------------------------------------------

[GRID]> oifcfg iflist eth0 10.1.1.0 eth1 192.168.7.0 eth1 169.254.128.0 eth2 172.149.2.0 eth2 169.254.0.0 eth3 10.2.2.0 [GRID]> oifcfg getif eth0 10.1.1.0 global public eth1 192.168.7.0 global cluster_interconnect,asm eth2 172.149.2.0 global cluster_interconnect,asm

One more physical interface that can be used for public or

private communication.

Private communication already uses multiple subnets.

Example attached

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Multiple Subnet Support in Oracle RAC 12c Preparing for multiple subnet usage – part 2

§  Multiple subnet support can be activated in two alternative ways:

1.  Defining interface name and subnet identifier

2.  Defining only a subnet identifier (interface: “*”)

§  Using approach one allows for more consistent management and will be used in this example.

[GRID]> oifcfg setif -global eth3/10.2.2.0:public [GRID]> oifcfg getif eth0 10.1.1.0 global public eth1 192.168.7.0 global cluster_interconnect,asm eth2 172.149.2.0 global cluster_interconnect,asm eth3 10.2.2.0 global public

[GRID]> oifcfg setif -global "*"/10.2.2.0:public [GRID]> oifcfg getif eth0 10.1.1.0 global public eth1 192.168.7.0 global cluster_interconnect,asm eth2 172.149.2.0 global cluster_interconnect,asm * 10.2.2.0 global public PRIF-29: Warning: wildcard in network parameters can cause mismatch among GPnP profile, OCR, and system

Alternative configuration:


Multiple Subnet Support in Oracle RAC 12c Adding second network resource to support multiple public subnets



ora.net1.network:10.1.1.0 ora.net1.network:10.1.1.0


[GRID]> su Password: [GRID]> srvctl add network -netnum 2 -subnet 10.2.2.0/255.255.255.0 [GRID]> exit [GRID]> crsctl stat res ora.net2.network -t ------------------------------------------------------------------------ Name Target State Server State details ------------------------------------------------------------------------ Local Resources ------------------------------------------------------------------------ ora.net2.network OFFLINE OFFLINE comet STABLE OFFLINE OFFLINE dancer STABLE OFFLINE OFFLINE dasher STABLE OFFLINE OFFLINE vixen STABLE ------------------------------------------------------------------------

§  The preparation: –  Prepare the physical connectivity – done

–  Prepare the stack as shown

§  Adding the network is one command §  VIPs need to be added separately.

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Multiple Subnet Support in Oracle RAC 12c Adding VIPs on second network to support multiple public subnets

§  Adding node VIPs to second subnet: [GRID]> more /etc/hosts

...

10.2.2.30 dasher-vip2 dasher-vip2.localdomain

10.2.2.31 dancer-vip2 dancer-vip2.localdomain

10.2.2.32 comet-vip2 comet-vip2.localdomain

10.2.2.33 vixen-vip2 vixen-vip2.localdomain





[GRID]> srvctl config vip -node comet VIP exists: network number 1, hosting node comet VIP Name: comet-vip VIP IPv4 Address: 10.1.1.32 VIP IPv6 Address: [GRID]> srvctl config vip -node vixen VIP exists: network number 1, hosting node vixen VIP Name: vixen-vip VIP IPv4 Address: 10.1.1.33 VIP IPv6 Address: [GRID]> su Password: [GRID]> srvctl add vip -node comet -k 2 -A comet-vip2/255.255.255.0 [GRID]> srvctl add vip -node vixen -k 2 -A vixen-vip2/255.255.255.0 [GRID]> srvctl add vip -node dancer -k 2 -A dancer-vip2/255.255.255.0 [GRID]> srvctl add vip -node dasher -k 2 -A dasher-vip2/255.255.255.0

vixen-vip / 10.1.1.33 comet-vip / 10.1.1.32

vixen-vip2 / 10.2.2.33 comet-vip2 / 10.2.2.32

Complete Example attached


Multiple Subnet Support in Oracle RAC 12c Start using the second subnet VIPs





#Example only – need to check for all nodes [GRID]> srvctl config vip -node vixen VIP exists: network number 1, hosting node vixen VIP Name: vixen-vip VIP IPv4 Address: 10.1.1.33 VIP IPv6 Address: VIP exists: network number 2, hosting node vixen VIP Name: vixen-vip2 VIP IPv4 Address: 10.2.2.33 VIP IPv6 Address: [GRID]> srvctl status vip -node vixen VIP vixen-vip is enabled VIP vixen-vip is running on node: vixen VIP vixen-vip2 is enabled VIP vixen-vip2 is not running [GRID]> srvctl start vip -node vixen PRKO-2420 : VIP is already started on node(s): vixen [GRID]> srvctl start vip -vip vixen-vip2 [GRID]> srvctl start vip -vip comet-vip2 [GRID]> srvctl start vip -vip dancer-vip2 [GRID]> srvctl start vip -vip dasher-vip2

vixen-vip / 10.1.1.33 comet-vip / 10.1.1.32

vixen-vip2 / 10.2.2.33 comet-vip2 / 10.2.2.32

§  Once VIPs are added verify the setup

§  Start the VIPs in order to use them §  Note: you need to specify the VIP name for the

VIPs on the second subnet to be started, as the default assumes the “default node VIP”.

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Listeners in Oracle RAC 12c The default listener is available by default




[GRID]> srvctl status listener Listener LISTENER is enabled Listener LISTENER is running on node(s): comet,vixen,dasher,dancer [GRID]> srvctl config listener Name: LISTENER Network: 1, Owner: grid Home: <CRS home> End points: TCP:1521

LISTENER: 10.1.1.13 and 10.1.1.33

LISTENER: 10.1.1.10 and 10.1.1.30

§  Various listeners are used in Oracle RAC 12c §  These are all listeners – used in a certain way!

§  The simplest one is the default listener

§  A listener depends on a network

§  A listener will listen on the node and VIP IP


Listeners in Oracle RAC 12c The default listener FAQ




[GRID]> srvctl modify listener -h Modifies the configuration for the listener. Usage: srvctl modify listener [-listener <lsnr_name>] [-oraclehome <path>] [-endpoints "[TCP:]<port>[, ...][/IPC:<key>][/NMP:<pipe_name>][/TCPS:<s_port>] [/SDP:<port>]"] [-user <oracle_user>] [-netnum <net_num>] #Example – adding another listener on another port on net 1 [GRID]> srvctl add listener -listener LSNR2NET1 -netnum 1 [GRID]> srvctl config listener -listener LSNR2NET1 Name: LSNR2NET1 Network: 1, Owner: grid Home: <CRS home> End points: TCP:1522 [GRID]> srvctl status listener -listener LSNR2NET1 Listener LSNR2NET1 is enabled Listener LSNR2NET1 is not running [GRID]> srvctl start listener -listener LSNR2NET1 [GRID]> srvctl status listener -listener LSNR2NET1 Listener LSNR2NET1 is enabled Listener LSNR2NET1 is running on node(s): comet,vixen,dasher,dancer

§  Can you define another port? - YES §  Can you define another owner? – YES §  Can you define another home? – YES, if needed. §  Can I add another listener on another port? - YES

LISTENER LISTENER

LSNR2NET1 LSNR2NET1

Example attached

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Listeners in Oracle RAC 12c The default listener FAQ




[GRID]> srvctl modify listener -listener LSNR2NET1 -endpoints "TCP:1528« [GRID]> lsnrctl status LSNR2NET1 LSNRCTL for Linux: Version 12.1.0.1.0 - Production on 16-SEP-2013 19:34:13 Copyright (c) 1991, 2013, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LSNR2NET1))) STATUS of the LISTENER ------------------------ Alias LSNR2NET1 Version TNSLSNR for Linux: Version 12.1.0.1.0 - Production Start Date 16-SEP-2013 16:35:34

Uptime 0 days 2 hr. 58 min. 39 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File /u01/app/12.1.0/grid/network/admin/listener.ora Listener Log File /u01/app/oracle/diag/tnslsnr/dasher/lsnr2net1/alert/log.xml Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LSNR2NET1))) (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.1.1.10)(PORT=1528))) (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.1.1.30)(PORT=1528))) Services Summary...

§  Can you define another port? - YES

§  New in Oracle Grid Infrastructure 12c: §  Online Modification of Resources

LISTENER LISTENER

LSNR2NET1:1522 LSNR2NET1:1522 LSNR2NET1:1528 LSNR2NET1:1528


Listeners in Oracle RAC 12c Adding a node listener to the second subnet



[GRID]> srvctl add listener -listener LSNR1NET2 -netnum 2 -endpoints 1522 [GRID]> srvctl config listener -listener LSNR1NET2 Name: LSNR1NET2 Network: 2, Owner: grid Home: <CRS home> End points: TCP:1522 [GRID]> srvctl status listener -listener LSNR1NET2 Listener LSNR1NET2 is enabled Listener LSNR1NET2 is not running [GRID]> srvctl start listener -listener LSNR1NET2 [GRID]> srvctl status listener -listener LSNR1NET2 Listener LSNR1NET2 is enabled Listener LSNR1NET2 is running on node(s): comet,vixen,dasher,dancer

§  Can I add another listener on another subnet? §  Absolutely!

ora.net2.network ora.net2.network LSNR1NET2:1522 LSNR1NET2:1522

Listener summary attached

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Listeners in Oracle RAC 12c Other listeners used as part of the stack

[GRID]> crsctl stat res –t -------------------------------------------------------------------------------- Name Target State Server State details -------------------------------------------------------------------------------- Local Resources --------------------------------------------------------------------------------

ora.ASMNET1LSNR_ASM.lsnr ONLINE ONLINE comet STABLE ONLINE ONLINE dancer STABLE ONLINE ONLINE dasher STABLE ONLINE ONLINE vixen STABLE

ora.ASMNET2LSNR_ASM.lsnr ONLINE ONLINE comet STABLE ONLINE ONLINE dancer STABLE ONLINE ONLINE dasher STABLE ONLINE ONLINE vixen STABLE

... -------------------------------------------------------------------------------- Cluster Resources --------------------------------------------------------------------------------

ora.LISTENER_SCAN1.lsnr 1 ONLINE ONLINE dasher STABLE

ora.MGMTLSNR 1 ONLINE ONLINE dasher 169.254.73.11 192.16 8.7.10 172.149.2.10, STABLE

§  Oracle RAC 12c introduces more listener (types): §  ora.LISTENER.lsnr

§  Default listener of type “ora.listener.type”

§  ora.ASMNETnLSNR_ASM.lsnr §  An Oracle ASM listener used by Flex

ASM of type “ora.asm_listener.type”

§  ora.mgmtlsnr.type §  Grid Infrastructure Management Repository

(GIMR) DB listener of type “ora.mgmtlsnr.type”

§  ora.LISTENER_SCANn.lsnr” §  A SCAN listener of type “ora.scan_listener.type”

local resource (runs on every node)

cluster resource (runs on any node)


Listeners in Oracle RAC 12c Valid Node Checking for Registration

§  New in the Oracle RAC 12c listeners: §  For Oracle RAC: IPv6 support

§  Valid Node Checking for Registration §  http://docs.oracle.com/cd/E16655_01/network.

121/e17610/listenercfg.htm#NETAG1588

§  The listener is now protected to both sides: §  It can be restricted to accept client connections

§  http://docs.oracle.com/cd/E16655_01/network. 121/e17607/guidelines.htm#DBSEG504

§  It can be restricted to prevent ay arbitrary DB (instance) from registering to it, if not allowed by default. (Valid Node Checking for Registration)



LISTENER LISTENER

raccdb1_3 raccdb1_1

Valid Node Checking for Registration

SCAN

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SCAN in Oracle RAC 12c The listener usage that combines it all

[GRID]> srvctl config network Network 1 exists Subnet IPv4: 10.1.1.0/255.255.255.0/eth0, static Subnet IPv6: [GRID]> srvctl config scan_listener SCAN Listener LISTENER_SCAN1 exists. Port: TCP:1521 Registration invited nodes: Registration invited subnets: ... [GRID]> srvctl status scan_listener -netnum 2 SCAN Listener LISTENER_SCAN1_NET2 is enabled SCAN listener LISTENER_SCAN1_NET2 is running on node vixen

§  SCAN was introduced with Oracle RAC 11g Rel. 2 –  http://www.oracle.com/technetwork/products/

clustering/overview/scan-129069.pdf

§  New in SCAN with Oracle RAC 12c: –  Multiple Subnet Support

§  IPv6 support for client connectivity (public network)

–  Valid Node Checking for Registration





MySCAN_3 / 10.1.1.52

MySCAN2_3 / 10.2.2.52 MySCAN2_2 / 10.2.2.51


SCAN in Oracle RAC 12c Adding a second SCAN listener to the system





MySCAN / 10.1.1.50

§  Adding a second SCAN listener to the system –  There is only one SCAN listener per subnet

–  In this example, each SCAN has only 1 IP address

§  Three steps are required to add another scan: 1.  Preparation of the host / network

2.  Adding another SCAN (VIPs mainly)

3.  Adding another SCAN listener

#Step 1: Preparation [GRID]> more /etc/hosts ... 10.1.1.50 myscan myscan.localdomain 10.2.2.50 myscan2 myscan2.localdomain [GRID]> srvctl config network Network 1 exists Subnet IPv4: 10.1.1.0/255.255.255.0/eth0, static Subnet IPv6: Network 2 exists Subnet IPv4: 10.2.2.0/255.255.255.0/, static Subnet IPv6:

The second (non-default) network to be used for the

second scan (netnumber 2)

A second IP for SCAN2

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SCAN in Oracle RAC 12c Starting the SCAN listener on the second network

#Step 2: Adding another SCAN [GRID]> su Password: [GRID]> srvctl add scan -scanname myscan2 -netnum 2 [GRID]> exit [GRID]> srvctl add scan_listener -netnum 2 -endpoints 1530 [GRID]> srvctl status scan -netnum 2 SCAN VIP scan1_net2 is enabled SCAN VIP scan1_net2 is not running [GRID]> srvctl status scan_listener -netnum 2 SCAN Listener LISTENER_SCAN1_NET2 is enabled SCAN listener LISTENER_SCAN1_NET2 is not running [GRID]> srvctl start scan_listener -netnum 2 [GRID]> srvctl status scan_listener -netnum 2 SCAN Listener LISTENER_SCAN1_NET2 is enabled SCAN listener LISTENER_SCAN1_NET2 is running on node vixen





MySCAN / 10.1.1.50

§  Then start the SCAN on the second network

LISTENER_SCAN1_NET2


SCAN in Oracle RAC 12c Start using SCAN with the Oracle Database

[RAC]> sqlplus sys/<pswd>@MySCAN:1521/raccdb1 as sysdba ...

SQL> show parameters listener NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ listener_networks string local_listener string (ADDRESS=(PROTOCOL=TCP)(HOST= 10.1.1.31)(PORT=1521)), (ADDRE SS=(PROTOCOL=TCP)(HOST=10.1.1. 31)(PORT=1528)) remote_listener string myscan:1521

[RAC]> srvctl stop database -d raccdb1 [RAC]> srvctl start database -d raccdb1 [RAC]> sqlplus sys/oracle@MySCAN:1521/raccdb1 as sysdba

...

SQL> show parameters listener NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ listener_networks string (( NAME=net2)(LOCAL_LISTENER=( DESCRIPTION=(ADDRESS=(PROTOCOL =TCP)(HOST=10.2.2.32)(PORT=152 2))))), ((NAME=net2)(REMOTE_LI STENER=myscan2:1530)) local_listener string (ADDRESS=(PROTOCOL=TCP)(HOST= 10.1.1.32)(PORT=1521)), (ADDRE SS=(PROTOCOL=TCP)(HOST=10.1.1. 32)(PORT=1528)) remote_listener string myscan:1521

§  When using more than one SCAN on the system, the LISTENER_NETWORKS parameter needs to be set for databases.

§  New in Oracle RAC12c: –  The LISTENER_NETWORKS parameter

is managed by the Oracle (Database) Agent as part of the Oracle Clusterware management.

–  To initiate the new configuration a database restart is required.

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SCAN in Oracle RAC 12c The SCAN listener FAQ

§  Can you define another port? - YES §  Can I define multiple ports? – YES**

§  Can you define another owner? – NO §  Can you define another home? – NO

§  Can I add another listener on another port? – YES

§  See MOS Note 220970.1 – The RAC FAQ:

§  How to use SCAN and node listeners with different ports?

•  ** For the purpose of allowing applications to maintain a distinguishable connect string on host / port level using one SCAN as the host or to enable port-based firewall configurations, SCAN can be set up to support more than one port. • It needs to be noticed that different ports are only used for an initial connect. • Once a connection using SCAN on any SCAN port has been established, port assignment is not maintained . • This means that all SCAN ports are treated the same, so that a connection that comes in on any SCAN port can be directed to any registered local listener on any port.


Agenda

§  Introduction





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Summary and Q&A Some more sessions of interest

Thursday •  Next-Generation Oracle Automatic Storage Management 12:30 PM - 1:30 PM Moscone South – 103

•  Maximize Availability by Using Database Services with Oracle RAC – 12:30 PM - 1:30 PM Moscone South – 103

•  The Oracle Multitenant Option Meets Oracle RAC 3:30 PM - 4:30 PM Moscone South – 103

Wednesday •  Oracle RAC Practical Performance Management and Tuning – 11:45 AM - 12:45 PM Moscone South – 104

•  Building a Test/Dev Infrastructure with Oracle Automatic Storage Management Cluster File System 3:30 PM - 4:30 PM Moscone South - 200

Tuesday •  Oracle RAC 12c Best Practices – 10:30 AM - 11:30 am ; Moscone South – 104

•  Oracle Flex Cluster: Optimized Resource Management for the Cloud – 12:00 PM - 1:00 PM; Moscone South – 104

Monday •  Understanding Oracle RAC Internals – 12:15 PM – 1:15 PM; Moscone South – 104

•  Come to see the “Meeting Service Objectives with Oracle Real Application Clusters” Demo – Moscone South, Left / SL-021

Copyright © 2013, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 12 of the corporate presentation template 62

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