GoldenGate for Oracle to MS SQL Server

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GoldenGate for Oracle to MS SQL Server

Objective

Upon completion of this lesson, you will be able to configure GoldenGate to provide Oracle

to SQL Server transactional data management using log-based extraction.

During this lesson, you will learn how to:

���� Prepare your user environment

���� Prepare the database

���� Configure and start the change capture process of database operations

���� Configure and execute the initial data load process

���� Configure and start the change delivery process of database operations

Configuration for Oracle to MS SQL Server

The following diagram illustrates an Oracle source system replicating to a Windows MS SQL

Server.

Overview of Tasks

Prepare the GoldenGate Environment

In order to execute this lesson, the GoldenGate application must be installed on both the

source and target systems. The installation includes a sample database and scripts to generate

Windows server <target>

MS SQL Server

<dsn>

Target

<schema>Replicat

Collector

Trails

Manager

<source> server

Oracle

Source<owner/schema>

Extract

Manager

Log

Network

GoldenGate for Oracle to MS SQL Server

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initial data as well as subsequent update operations. The source and target tables are created

and loaded with initial data. The GoldenGate Manager processes are also started so that other

processes may be configured and started.

Configure Initial Data Load

Initial database synchronization is almost always required. To initially load data across

actively changing databases, you have limited choices. GoldenGate provides the ability to

perform initial data synchronization while your application remains active. There are several

techniques available, including sending data to files to be loaded by Replicat or by Microsoft

BCP/DTS bulk-load utility, or sending data directly to Replicat.

This lesson demonstrates using the direct load method to capture data directly from the

source tables and send it directly to the delivery process on the target system.

Configure Change Capture

For log-based Oracle capture, the Extract process is configured to capture change data

directly from the Oracle online redo logs or archive logs and store the changes in data queues

known as GoldenGate remote trails.

Configure Change Delivery

Once the tables have been initially loaded with data, the Replicat process is configured to

deliver the captured change data into the target database.

<target> server

Initial

Replicat

MS SQL Server

<dsn>

Target

<schema>

<source> server

Oracle

Source<owner/schema>

Initial

Extract

Network

Prepare the Environment

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Exercise 1.

Prepare the Environment

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Objective

The goals of this exercise are to:

���� Configure and start the Manager processes

���� Create sample tables and load data into source tables

���� Add supplemental logging

� Generate source definitions file

Prepare your Oracle source environment

1. Configure the Manager process on the source

On the <source> system, create the Manager parameter file and specify the port it should use.

� Create the Manager parameter file.

Shell> cd <install location> Shell> ggsci GGSCI> EDIT PARAMS MGR

� Use the editor to assign a port.

--GoldenGate Manager parameter file PORT <port>

� Start the Manager.

GGSCI> START MGR

� Verify that the Manager has started.

GGSCI> INFO MGR

2. Create the source tables and load the initial data.

Using SQL*Plus, create and populate the TCUSTMER and TCUSTORD tables by running the

demo_ora_create.sql and demo_ora_insert.sql files found in the install directory.

Execute the following commands on the <source> system.

Shell> cd <install location> Shell> sqlplus <login>/<password> SQL> @demo_ora_create

Prepare the Environment

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SQL> @demo_ora_insert

Verify the results:

SQL> select * from tcustmer; SQL> select * from tcustord; SQL> exit

3. Add supplemental logging

Using GGSCI, log in to the database on the <source> and turn on supplemental logging for the

TCUSTMER and TCUSTORD tables.

Shell> ggsci GGSCI> DBLOGIN USERID <login> GGSCI> ADD TRANDATA <owner/schema>.TCUSTMER GGSCI> ADD TRANDATA <owner/schema>.TCUSTORD

Verify that supplemental logging has been turned on for these tables.

GGSCI> INFO TRANDATA <owner/schema>.TCUST*

4. Configure source definition generator

Execute the following commands on the <source> system to create the DEFGEN parameter

file and add the listed parameters.

Shell> cd <install location> Shell> ggsci GGSCI> edit param defgen

DEFSFILE ./dirdef/source.def, PURGE USERID <login>, PASSWORD <password> TABLE <owner/schema>.TCUSTMER; TABLE <owner/schema>.TCUSTORD;

GGSCI> exit

5. Execute the source definition generator

Execute the following commands on the <source> system.

Shell> defgen paramfile dirprm/defgen.prm

6. Transfer the source definition file to the target system

Execute the following commands to transfer the souce.def file to the <target> system.

Shell> ftp <target> Name (<source>:): <login> Password: password ftp> ascii ftp> cd <install location>/dirdef

Prepare the Environment

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ftp> lcd <install location>/dirdef

ftp> put source.def (see note below) ftp> bye

Note: To avoid overlaying existing definition files, always put the file as <db type>.def

instead of source.def (e.g. Oracle.def).

Prepare the SQL Server 2005 target system

Install Manager

1. Configure Manager process on the target

Execute the following commands on the <target> system.

Note! The port numbers must be unique if you are installing GoldenGate more than once on

the same server.

Shell> cd <install location> Shell> ggsci GGSCI> EDIT PARAMS MGR

� In the parameter file, enter the following parameter, then save and close the file.

-- GoldenGate Manager Parameter file PORT <port>

� Start Manager.

GGSCI> START MANAGER

� Verify the results:

GGSCI> INFO MANAGER

Steps to create the database

2. Create the database

From Start>Programs, run SQL Server Management Studio.

� Enter the name of the local SQL Server instance, then click connect.

Note: These instructions assume SQL Server Authentication which requires the

more complex, double layer, of authentication. For only Windows Authentication,

you can leave out most of the login and password entries.

Prepare the Environment

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� This displays the main SQL Server Management Studio dialog box. Right, right-click

Database and select the New Database option.

� The New Database dialog box appears. In the Name box, type the <database> from

the Lab Preparation worksheet.

Prepare the Environment

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� Click OK to add the database.

� The main SQL Server Management Studio dialog box reappears.

3. Create SQL Server logins and users

� Right-click Security and select the New > Login.

� The New Login dialog box appears.

Prepare the Environment

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� For Name, type the <login>.

� Select Authentication,

� If you selected SQL Server Authentication, type the <password> in the two

Password fields.

� Under Defaults, select your <database> for Database, and leave Language set to the

default.

� Do not click OK. Instead, from Select a page in the upper left-hand box, double click User Mapping.

Prepare the Environment

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� In the upper Users mapped to this login area, activate the checkmark next to your

database.

� In the lower Database role membership for <database> area,, check the box for the

db_owner role.

� Click OK to exit.

The next step creates a schema that you will associate with the new user.

� While you have the database selected, click on the New Query button in the main

menu.

� The right side of the dialog displays the SQL Query interface. Type in:

create schema <owner/schema>;

And press the Execute button from the toolbar.

Prepare the Environment

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Now you need to associate the new user and the schema that you have created with the new

database.

� Right click on the Security option that is under the database and select New > User.

� The New Database User dialog box appears. Enter the name of your user and press the browse button labeled with three dots (…).

Prepare the Environment

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� The Select Login dialog displays. Press the Browse button.

� Select your new user <login> from the list. Then press OK.

� Your selected user now displays in the object names box. Press OK to exit from

Select Login.

� Back in the New Database User dialog, enter the <schema> you added as the default

schema and press OK.

4. Create the ODBC system data source name

The GoldenGate Extract process connects to a SQL Server database through an ODBC (Open

Database Connectivity) connection. Both the Extract and Replicat components of GoldenGate

require that a system data source name (DSN) be established, which stores the information

about how to connect to the SQL Server.

� Click Start > Settings > Control Panel.

� Double-click Administrative Tools.

� Double-click Data Sources (ODBC) to open the ODBC Data Source Administrator

dialog box.

� Click the System DSN tab, and then click the Add button. The Create New Data

Source dialog box appears.

Note: For SQL Server 2000, you may use any ODBC driver supported by the

database. For SQL Server 2005, however, you must use the ODBC driver that is

included with Microsoft Data Access Components (MDAC). Both Extract and

Replicat will abend if the SQL Native Client ODBC driver that is provided with SQL

Server 2005 is used.

Prepare the Environment

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� Select the SQL Server driver and then click Finish. The Create a New Data Source

to SQL Server dialog box appears.

� For Name, type <dsn>.

� For a description, type "GG Training Data source" when creating this source DSN.

This field is optional.

� For Which SQL Server do you want to connect to, select the server name.

� Click Next.

� Answer the question about how SQL Server should verify the login by selecting the

option that you entered when creating the <login>. Then type <login> in Login ID

and <password> in Password.

Prepare the Environment

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� Click Next.

� Make certain the default database is set to the database that you created; otherwise

select Change the default database to: and select it. Leave the other settings to their

defaults to use ANSI.

� Click Next.

� Leave the next dialog box set to the defaults, and click Finish.

� In the confirmation, click Test Data Source to test the connection.

� Close the confirmation dialog box and the Create a New Data Source box.

Prepare the Environment

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5. Create the practice tables

Execute the following commands on the <target> system.

� Go to SQL Server Management Studio, select your database and select New Query

from the toolbar.

� If the correct database is not displayed in the drop down box (showing ggsdata

above), click on the arrow and select it from the list.

� Click the File > Open and navigate to the demo_mss_create.sql script.

� Click Open to open the script in the New Query window.

� Execute the script by clicking the Execute Query button on the toolbar.

� Verify the results using the following commands in the input window:

sp_help tcustmer go sp_help tcustord go

Initial Data Load

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Exercise 2.

Initial Data Load using Direct Load Method

Objective

These steps configure initial load groups that copy source data and apply it to the target

tables.

Steps to configure initial load

1. Add the initial data load extract batch task group

Execute the following commands on the <source> system to add an Extract process called

EINI<unique id>1.

� Execute the following command in GGSCI to create the batch task.

Shell> cd <install location> Shell> ggsci GGSCI> ADD EXTRACT EINI<unique id>, SOURCEISTABLE

� Verify the results:

GGSCI> INFO EXTRACT *, TASKS

2. Configure the initial data load Extract parameter file

� Execute the following command in GGSCI to open the editor.

GGSCI> EDIT PARAMS EINI<unique id>

� Add the following lines to the parameter file

-- -- GoldenGate Initial Data Capture -- for TCUSTMER and TCUSTORD -- EXTRACT EINI<unique id> USERID <login>, PASSWORD <password> RMTHOST <target>, MGRPORT <port> RMTTASK REPLICAT, GROUP RINI<unique id> TABLE <owner/schema>.TCUSTMER; TABLE <owner/schema>.TCUSTORD;

1 The process names used in lab exercises, for example EINIBD, are made up of 1) one character for the

GoldenGate process (E for Extract, R for Replicat); 2) three or four to describe the process type (INI for

initial data load, ORA for capture from or delivery to an Oracle database, etc.) and 3) two characters to

create a unique identifier (usually your initials).

Initial Data Load

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3. Add the initial data load Replicat batch task group

Execute the following commands on the <target> system.

� Execute the following command in GGSCI to create the batch task.

GGSCI> ADD REPLICAT RINI<unique id>, SPECIALRUN

� Verify the results:

GGSCI> INFO RINI<unique id>*, TASKS

4. Configure the initial data load Replicat parameter file

Execute the following commands on the <target> system.

� Execute the following command in GGSCI to open the editor.

GGSCI> EDIT PARAMS RINI<unique id>

� Add the following lines to the parameter file

-- GoldenGate Initial Data Load Delivery -- REPLICAT RINI<unique id> TARGETDB <dsn>, USERID <login>, PASSWORD <password> DISCARDFILE ./dirrpt/RINI<unique id>.txt, PURGE SOURCEDEFS ./dirdef/source.def MAP <owner/schema>.TCUSTMER, TARGET <owner/schema>.TCUSTMER; MAP <owner/schema>.TCUSTORD, TARGET <owner/schema>.TCUSTORD;

Note: Remember to use <db type>.def if you renamed the source.def when you transferred it

to the <target>.

5. Execute the initial data load process

Execute the following commands on the <source> system.

� Execute the following command to start the initial data load process.

GGSCI> START EXTRACT EINI<unique id>

� Verify the results:

GGSCI> VIEW REPORT EINI<unique id>

Execute the following commands on the <target> system.

� Verify the results:

GGSCI> VIEW REPORT RINI<unique id> Query Analyzer> SELECT * FROM <owner/schema>.TCUSTMER Query Analyzer> SELECT * FROM <owner/schema>.TCUSTORD

Configure Change Capture

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Exercise 3.

Configure Change Capture

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Objective

The goals of this exercise are to:

���� Configure and add the Extract process that will capture changes.

���� Add the trail that will store the changes.

� Start the Extract process.

Configure change capture

1. Add the Extract group

Execute the following command on the <source> system to add an Extract group named

EORA<unique id>.

GGSCI> ADD EXTRACT EORA<unique id>, TRANLOG, BEGIN NOW, THREADS <instances>

Verify the results:

GGSCI> INFO EXTRACT EORA<unique id>

2. Create the Extract parameter file

Execute the following commands on the <source> system.

GGSCI> EDIT PARAM EORA<unique id>

-- -- Change Capture parameter file to capture -- TCUSTMER and TCUSTORD Changes -- EXTRACT EORA<unique id> USERID <login>, PASSWORD <password> RMTHOST <target>, MGRPORT <port> RMTTRAIL ./dirdat/<trail id> TABLE <owner/schema>.TCUSTMER; TABLE <owner/schema>.TCUSTORD;

Note: Record the two characters selected for your <trail id>: ______. You will need this in

the next step and when you set up the Replicat.

Configure Change Capture

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Note: When Oracle Automatic Storage Management (ASM) is in use, the TRANLOGOPTIONS

ASMUSER and ASMPASSWORD must be set in the Extract parameter file. For more information

refer to the GoldenGate for Windows & UNIX Administrator and Reference manuals.

3. Define the GoldenGate trail

Execute the following command on the <source> to add the trail that will store the changes

on the target.

GGSCI> ADD RMTTRAIL ./dirdat/<trail id>, EXTRACT EORA<unique id>, MEGABYTES 5

Verify the results:

GGSCI> INFO RMTTRAIL *

4. Start the capture process

GGSCI> START EXTRACT EORA<unique id>

Verify the results:

GGSCI> INFO EXTRACT EORA<unique id>, DETAIL GGSCI> VIEW REPORT EORA<unique id>

Discussion points

1. Identifying a remote system

What parameter is used to identify the remote target system?

_________________________________________________________________________

2. Sizing the GoldenGate trail

Where do you set how large a GoldenGate trail file may get before it rolls to the next file?

What option do you use?

_________________________________________________________________________

_________________________________________________________________________

Configure Change Delivery

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Exercise 4.

Configure Change Delivery

Objective

The goals of this exercise are to:

���� Set up the checkpoint table on the target system.

���� Create a named group that includes the Replicat process and the checkpoint tables.

���� Configure the Replicat group by adding parameters.

���� Start the Replicat group.

Set up checkpoints

1. Edit a GLOBALS file on the target system

Execute the following commands on the <target> system.

� Edit the GLOBALS parameter file to add the checkpoint table.

Shell> cd <install location> Shell> ggsci GGSCI> EDIT PARAMS ./GLOBALS

In the text editor, type:

CHECKPOINTTABLE <owner/schema>.ggschkpt

� Record the checkpoint table owner and name, then save and close the file.

Table owner ____________________ name ___________________

Note: You could name the table anything you want, but for training purposes we are using ggschkpt.

2. Activate the GLOBALS parameters

For the GLOBALS configuration to take effect, you must exit the session in which the changes

were made. Execute the following command to exit GGSCI.

GGSCI> EXIT

Configure Change Delivery

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3. Add a Replicat checkpoint table

Execute the following commands on the <target> system.

This step adds the checkpoint table that you specified when you created the GLOBALS

parameter file. It will be created in the <dsn> database.

� Run GGSCI on the target.

Shell> cd <install location> Shell> ggsci

� Execute the following commands in GGSCI.

GGSCI> DBLOGIN SOURCEDB <dsn>, USERID <login>, PASSWORD <password>

GGSCI> ADD CHECKPOINTTABLE

Configure delivery

4. Add the Replicat checkpoint group

Execute the following commands on the <target> system to create the Replicat group named

RMSS<unique id>.

GGSCI> ADD REPLICAT RMSS<unique id>, EXTTRAIL ./dirdat/<trail id>

Note: Refer to your Extract set up for the correct two-character <trail id>.

5. Create Replicat parameter file

� Execute the following command on the <target> system to edit the Replicat

parameter file.

GGSCI> EDIT PARAM RMSS<unique id>

� Add the following lines to the parameter file.

REPLICAT RMSS<unique id> TARGETDB <dsn>, USERID <login>, PASSWORD <password> HANDLECOLLISIONS SOURCEDEFS ./dirdef/source.def DISCARDFILE ./dirrpt/RMSS<unique id>.DSC, PURGE MAP <owner/schema>.TCUSTMER, TARGET <owner/schema>.TCUSTMER; MAP <owner/schema>.TCUSTORD, TARGET <owner/schema>.TCUSTORD;

Note: Remember to use <db type>.def if you renamed the source.def when you transferred it

to the the <target>.

Configure Change Delivery

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4. Start the Replicat process

Execute the following commands on the <target> system.

� Execute the following command in GGSCI to start the Replicat process.

GGSCI> START REPLICAT RMSS<unique id>

� Verify the results:

GGSCI> INFO REPLICAT RMSS<unique id>

Discussion points

Search in the Windows//UNIX Reference Guide for the information on the following

questions.

1. When to use HANDLECOLLISIONS

When would you use HANDLECOLLISIONS? What does it do?

_________________________________________________________________________

_________________________________________________________________________

2. What information is supplied by SOURCEDEFS?

_________________________________________________________________________

_________________________________________________________________________

3. What is the purpose of the DISCARDFILE?

_________________________________________________________________________

_________________________________________________________________________

Generate Activity and Verify Results

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Exercise 5.

Generate Activity and Verify Results

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Objective

The goals of this exercise are to:

���� Execute miscellaneous update, insert, and delete operations on the source system.

���� Verify the delivery of the changes to the target

���� Turn off the error handling used for initial load.

Generate database operations

1. Execute miscellaneous update, insert, and delete operations

Execute the following commands on the <source> system.

Shell> cd <install location> Shell> sqlplus <login>/<password> SQL> @demo_ora_misc

Verify change capture and delivery

2. Verify results on the source system

Execute the following commands on the <source> system.

SQL> select * from tcustmer; SQL> select * from tcustord; SQL> exit

Shell> ggsci GGSCI> SEND EXTRACT EORA<unique id>, REPORT GGSCI> VIEW REPORT EORA<unique id>

Verify your target SQL Server 2005 results

3. Verify your results on the SQL Server 2005 target

� Verify and record processing statistics on the <target> with the following command

in GGSCI.

GGSCI> SEND REPLICAT RMSS<unique id>, REPORT

Generate Activity and Verify Results

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GGSCI> VIEW REPORT RMSS<unique id>

� Verify the data by executing the following commands in the New Query window of

SQL Server Management Studio on the source:

select * from TCUSTMER; select * from TCUSTORD;

Turn off error handling

4. Turn off initial load error handling for the running delivery process

Execute the following commands on the <target> system.

GGSCI> SEND REPLICAT RMSS<unique id>, NOHANDLECOLLISIONS

5. Remove initial load error handling from the parameter file

GGSCI> EDIT PARAMS RMSS<unique id>

Remove the HANDLECOLLISIONS parameter.

Exercise Name

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