Marc Zai Database Analyst & Administrator

469.347.9567 marczai.jh@gmail.com

SUMMARY

Expert in Oracle Technologies, Certified OCE for 11g, OCP 12c and OCP E-Business Suite (EBS) R12 Apps Administration.

7+ years of hands-on experience in SDLC while focusing on Database Administration, Development and SQL Programming for ERP environments. 10 + years IT industry experience.

Proficient in Database Administration, Design with Testing (Modular & Integrated), Data Modeling (logical design), Data Structures and Perform Tuning.

Extensive experience in Installation, Configuration, Upgrades, Patching, Migration, Trouble shooting and Performance tuning of Oracle 9i/10g/11g version up to 11.2.0.1 databases on LINUX and Windows platforms.

Wide experience in setting up Backup and DR policies for database environments. Adept in client facing / consulting roles and interacting with business managers / end-users as well as

technical teams including domain experts, developers, engineers and QA. Deep experience in Analysis, Design and Development of Database-driven Applications for DSS

(Decision Support Systems). TECHNICAL SKILLS Databases Administration:

Oracle 8i, 9i & 11g (Expert): Installation, configuration and upgrades of Oracle server software and related products. Take care of the Database design and implementation. Interface with Oracle Corporation to provide 24x7 technical support.

Oracle E-Business Suite (EBS) R-12: Undertake installations, patching, cloning and managing Oracle E-Business Suite environment (Database layer and Application server layer). Configuration of Ad Utilities.

Backup & Recovery: Establish and maintain sound backup and recovery policies and procedures with respect to RTO and RPO. Expert in using Recovery Manager (RMAN) for backup and restores. Configuration of recovery catalog for target and auxiliary databases. Execute RMAN commands and write compound Scripts to perform full, incremental, cumulative, differential, encrypted and compressed backups/restoring/recovery.

SQL*Loader: Write SQL*Loader control files for data loading. Analyzing and verifying data after bulk load. Data migrations using flat file system and CSV formats.

Performance Tuning: Schedule and Troubleshoot Database performance issues using Automated Workload Repository (AWR), Active Session History (ASH) and Statspack. Capable in SQL query Optimization by gathering statistics using Explain plan, Auto trace and TKPROF.

Data Guard 10g & 11g: Implemented physical standby for both inactive (10g) and active (11g) data guard to ensure high availability, data protection, and disaster recovery for enterprise data.

RAC 11g: Implemented Real Application Cluster with Openfiler 2.2 with 2 nodes on Linux AS-5. Oracle Golden Gate: Working Knowledge of unidirectional, bidirectional, peer-to-peer and

broadcasting topologies for Oracle Replication to achieve high availability.

Oracle ASM: Use Automatic Storage Management to achieve High Availability and Resiliency. Unix /Linux: Proficient in various UNIX Operating System environments including shell scripting,

corn tables, system administrator logs, disk usage, mount point maintenance using fstab, VI Editor, shell and environment variables, regular expressions and grep commands, log monitoring etc.

GUI Mode: Use Oracle Enterprise Manager Dashboard to perform proactive tasks. CLI Mode: Command line Interface used to write scripts as well as commands to perform proactive

tasks. Languages:

SQL (Expert): - Programmed complex as well as embedded SQL Statements for DML, DDL, DTC, Data Retrieval, System Control and Session Control. Controlling access to the database and its objects guaranteeing database consistency and integrity.

PL/SQL: - Programmed/edited procedures, functions and triggers to build different packages for seamless processing of SQL commands.

Design Tools:

Microsoft Visio: - Designed Flow Charts, Context free Diagrams, DFD Level 1 and DFD Level 2 using MS Visio for various application modules.

ERwin: - Provide data modeling (ERD) using ERwin to help manage complex data environment. UML Rational Rose: - Designed use case, sequence and class diagrams using Unified Modeling

Language tool for visual modeling and component construction of enterprise-level software applications.

Microsoft Project: - Manage deliverables, work breakdown structures (WBS), and resource assignments. Scheduling based on task assignments, task dependencies, task constraints, and other attributes.

PROFESSIONAL EXPERIENCE ASP Tech Management, Dallas, Texas Nov 2014 – To Date Database Manager/ Analyst Description: ASP Tech Management, provide solutions to clients that include tier-1, tier-2, and startup organizations across various industries globally particularly health sciences. We are at the forefront of research, development and consulting in our practice domains and it is evident from the kind of results we have achieved for our clients. Corporate Headquartered in Dallas, The Company has been known to solve its clients' most complex problems through deliberation, perseverance and collaboration. Responsibilities:

Performed SQL and database instance tuning using a wide range of technologies including ADDM, AWR, Statspack, extended SQL trace, OEM Performance Manager.

Performed full database RMAN backup and recovery, data pump import & export. Implement and monitor roles, policies, profiles, auditing for database and application security. Provided on call database support through all testing phases and general releases of software and

point of contact for the offshore development team. Used Oracle 11g Enterprise Manager db console tools such as ADDM, AWR for diagnosing &monitoring

events, jobs & performance related problems.

Implementing the changes in the database logical and physical design. Setup and maintain documentation and standards for different documents and instruction manuals. Performed database monitoring and tuning to ensure databases run at peak performance;

troubleshooting performance issues. Installed, configured, Upgraded, Security Patch Oracle Database products. Analyze load test results for database performance, poor SQLs, Missing Indexes etc. before

implementing in Production Provide recommendations on SQL and database settings to Application teams. Daily DBA activities like Tuning of SQL/PLSQL, Performance Tuning and managing user groups,

Database security, OS space monitoring etc. Environment: Oracle 11G, Oracle Active Data-Guard with Physical and logical standby, RMAN, PL/SQL. SQL. Air University June 2006 – Nov 2014 Clients: Air University (AU), PAF, College of Flying Training (CFT), Higher Education Commission (HEC) Sr. Database Administrator/Analyst (Oracle) Description: Air University aspires to be among the leading national universities, excelling in teaching, learning, research, innovation and public service. The mission of Air University is to achieve excellence in teaching and research for producing graduates with sound professional knowledge, integrity of character, a keen sense of social responsibility and a passion for lifelong learning. The University shall stand committed to creating an environment conducive for attracting the best students, faculty and supporting staff for contributing to the development of a prosperous, peaceful and enlightened society. Responsibilities: Led database development, deployment and administration for multiple projects like AUMS, FAMS, HRMS, QCA, GCBT, FEESYS based on Oracle (Oracle 9i, Oracle 11g, Forms/Reports 6). Act as Oracle SME. Sr. Database Administrator 2011-2014

End-to-end installation, configuration, patching and upgrades of Oracle Software and Database instances.

Responsible for production database administration, support and monitoring to ensure a proactive problem recognition and resolution of database issues.

Led installation of 11gR2 with Grid Control for ASM, and database migration from Oracle9i to 10g and 11gR2.

Database Cloning using hot/cold backup using RMAN and CLI mode with control-file creation. Active Dataguard implementation with Oracle 11g to achieve high availability and data protection. Migrated unstructured data into Oracle using SQL*Loader and external tables. Performance optimization of SQL statements using TKPROF, EXPLAIN PLAN, STATSPACK and SQL

Access Advisor. Logical storage structure of the database (tablespace management, undo management, extent

management). Creating, monitoring & reorganizing database objects like schemas, users, tablespaces, tables,

synonyms, indexes. Allocating quota to users on default and temporary tablespaces. RMAN and IMPDP/EXPDP backup & recovery configuration and evaluating procedures periodically.

Involved in planning for infrastructure (servers, storage, network) to efficiently run Oracle environment.

Database recovery (transactions/tables/database) and rollout (incarnation) using Flashback Technology.

Systems/Database Analyst 2006-2011

Responsible for system analysis, requirements gathering, data modeling and database design for rollout of new applications.

Prepare project technical documentation including Flow charts, DFD, ERD and SRS documents. Responsible for ensuring smooth execution of end-to-end SDLC using RAD model. Proactive database tuning and performance optimization; also ensuring database-level security and

integrity. Responsible for providing support and troubleshooting on Oracle related issues. Designing reports based on business requirements for end users and management. Using SQL to perform DRL, DML, DTC and DDL to extract, manipulate and create tables, views,

sequences, indexes and synonyms from cross schemas and multiple databases in homogenous environment.

Using PL/SQL to build/edit packages, procedures, functions, triggers. MAJOR PROJECTS FAMS (Fixed Asset Management System) – ERP

Analysis, Design and Maintenance of FAMS that helped maintain paperless record for all the fixed assets.

Provided barcode tracking of the each inventory along with loan cards for departments. Performed ETL operations to load data from Microsoft Excel and flat files to Oracle schemas. PL/SQL triggers for audit trails to track DML record. Designed multi-dimensional reports using Oracle 9i reporting tool per management requirements. Leveraged Oracle 11g as back-end and Oracle AS-Developing Suite 10g as front-end GUI.

HRMS (Human Resource Management System) – ERP

Analysis, Design, Testing, Documentation and Maintenance for HRMS. Integrated with in-house custom PAYROLL system application. Enhanced functionality of HRMS for recruiting and advanced applicant tracking. PL/SQL procedures and functions to implement business rules for HRMS. Leveraged Oracle 11g at back-end and 10g Development suite at front-end. Automated Reporting for Quality Control Analysis, Design, Testing and Maintenance for the project. Used B-Tree indexes for fast retrieval of data. Back-end: Oracle 11g, Front-end: Oracle Forms 10g.

GCBT (General Computer Based Testing) Application

Replaced OMR and OCR hardware to enhance result-compilation to reduce overall costs by 65%. Involved in Analysis, Database Design, Testing and Maintenance for the project. Secured Large Question Bank by Transparent Data Encryption on table level using encryption key.

Bitmap index used on Question Bank for fast retrieval based on low cardinalities of their parent group. FEESYS (Fee Management System) – Billing Application

Database maintenance of the system; also responsible for migrating data from one schema to another, and integration with Accounting System.

Enabling and configuring audit trails for securing the system. Performing flashback version for version comparison to conduct system based auditing. Object based auditing (FGA) for critical database objects.

Environment: Oracle 9i, Oracle 10g, Oracle 11g, Forms/Reports 6, SQL*Loader, SQL, PL/SQL, ETL. COMSATS Software Center Sep 2003 – Sep 2005 Research Associate (Software/Database Engineer) Description COMSATS Software Center is a public research university in Pakistan. It is a multi-campus institute with its headquarters located in the urban area of Islamabad. It is ranked among the top 5 universities of Pakistan as of the latest ranking released by the Higher Education Commission of Pakistan. From its day of creation to this day, the university has managed to create 7 ISO 9001:2008 certified campuses throughout the nation. Additional plans are underway to create an overseas campus in the Gulf. Responsibilities:

Part of the team to design and develop management information system that includes student information system and course registration system based on Microsoft SQL Server 2000.

Provide database support for routine functions (locking, resource consumption, user support, etc.) to support business operations.

Involved in integration of course registration system with main COMSIS application. Elicited requirements, and designed use-cases and sequence diagrams using Rational Rose. Executed SQL statements to retrieve, modify and create object structures. Built ERD’s and DFD’s using ERwin and Microsoft Visio. Involved in requirements gathering using interviews, questionnaires and analyzing existing data.

Environment: SQL Server 2000, Microsoft Visio EDUCATION

Masters of Software Engineering (MSE), 2003 TRAININGS & PROFESSIONAL CERTIFICATIONS

OCE - Oracle Real Application Clusters 11g and Grid Infrastructure Administrator OCP - Upgrade to Oracle Database 12c OCP - DBA Certification for Oracle 11g

OCA - DBA Certification for Oracle 11g OCP - Oracle E Business Suite R12 – (Apps DBA) Corporate training on Data Guard 11g 2-day workshop attended for Oracle Golden Gate 2-day workshop on Grid Infrastructure for Oracle 11g 1-day workshop on RAC 10g implementation