SUMMARY

• Over 7 years of experience of Oracle Database Administrator including 10g/11g/12c/18c/19c databases.
• Managed Databases on RHEL, OEL, CentOS, AIX, HPUX, Solaris and Windows.
• Proficient in 11g,12c,18c and 19c migration.
• Hands on experience in database administration and production support.
• Extensive work in database installation, configuration and upgrades.
• Applied CPU and PSU patches on quarterly basis.
• Worked on tuning SQL and instance for faster response time.
• Extensive work experience in backup and recovery space management, cloning and migration.
• Written shell scripting to automate procedures and jobs.
• Expertise in various phases of System Development Life Cycle (SDLC) like analysis, design, Development, testing, implementation and Maintenance.
• Excellent Experience as Production DBA with 24X7 support.
• Expertise in Developing Recovery Manager (RMAN) scripts for database backup
• Build 2 - node and 4-node RAC clusters
• Excellent Experience in installing and maintaining Oracle Data Guard in building Physical Standby
• Extensive expertise in export import and data pump.
• Maintenance and Expertise in using VERITAS Cluster Server (VCS).
• Performed Installation of Oracle 11g ASM &10g RAC software with ASM & OCFS2 File systems.
• Experience in Migration of databases from oracle 11g to 12c to 18c to 19c
• Excellent experience of data migration, data archiving and data access techniques
• Expertise in silent database installs
• Build uni-directional Golden Gate replication.
• Administered and managed Golden Gate.
• Analyzing database performance and tuning database on Oracle Exadata using Real Application Testing (RAT)
• Build and Managed 13c cloud control on OEM
• Clone databases using RMAN restore/recovery methods and RMAN duplicated database methods
• Experience in tuning Different components and identifying bottle necks in performance of databases
• Hands on Experience in Performance tuning and optimization using DBMS STATS, AWR and optimizer hint and tools like Explain Plan, STATSPACK, SQL*Trace, TKPROF.
• Analyze database performance using ASH, AWR and ADDM reports
• Creating and Managing Users, Roles and Privileges with required security implementations
• Expert in encryption for databases using Wallet Manager
• Database replication using snapshot, materialized views and advance replication methods
• Strong in writing shell scripts to setup cron jobs for checking Adaptive server's availability, backup of databases and crucial system tables, nightly batch jobs for data transfer between servers.
• Assisted in integration of Exadata applications into current IT actionable events and solutions.
• Migrating databases to Oracle Exadata Database Machine for different clients
• Provides technical assistance for many platforms, during issues and/or outages. Areas include but are not limited to Oracle, Peoplesoft, homegrown monitoring applications, operating systems, hardware components and the network infrastructure.
• Flexible and excellent team player. Ready to work in any time slot.
• Excellent troubleshooting skills and quick learner.

TECHNICAL SKILLS

RDBMS: Oracle 11g/10g /12c/18c/19c (ASM, RAC & Data guard) 13c cloud control (OEM)

OS: Linux, RHEL, Windows, OEL, Solaris, AIX, HPUX, UNIX, CentOS

Tools: OEM, TOAD, SQL Developer, Smart FTP, Cute FTP, Putty, Cygwin, Spot Light, Erwin, DBCA, Data Guard, ASM, clusterware etc.

DB Utilities: SQL Plus, SQL Loader, Exp/Imp, Data pump Utilities, RMAN, tkprof

Language: SQL, PL/SQL for Oracle, Shell programming, C/C++.

Shell script: Shell Script (Bourne shell & Korn Shell)

PROFESSIONAL EXPERIENCE

Confidential, Irving, TX

Oracle DBA

Responsibilities:

• Oracle 11g/12c/18c and 19c with Physical Stand by Data Guard.
• Handling the code deployments developed by Developers on Dev, Test and Production.
• Managing users, profiles, roles and table space according to the requirement. Created custom script to create large number of users automatically.
• Database user backup using Export /Import Utility. And database backup using data pump.
• Production refresh to PRR environment and conversion environment when required.
• Done partitions on tables and indexes to get better performance on large tables.
• Monitoring Backup report, Database sync report (Verifying Production & Standby Database Synchronization), AWR report and wait events reports using OEM and Custom scripts.
• Configured OEM for the performance monitoring and database administration.
• Monitored indexes and analyzed their status for performance tuning and query optimization (Done lot of SQL tuning).
• Configuration, troubleshooting Golden Gate issues
• Setup Uni-directional GoldenGate setup.
• Setup and managed replication using Oracle GoldenGate
• Used SQL Trace, TKPROF, STATSPACK, perfstat, Explain Plan, AWR and ADDM for database performance monitoring and tuning. Ensure availability of databases and all related services such as RAC, ASM, Oracle streams and Data Guard.
• Setup new database infrastructure. Install Grid Infrastructure /Real Application Clusterware (RAC), database server software and related products. Setup, configure standby databases, replication using Oracle Streams/Golden Gate, ASM for data storage and RMAN for backup and recovery. Apply Oracle patch set/PSU.
• Successfully upgraded and migrated databases for critical OLTP application from Oracle 12c RAC infrastructure to Oracle 18c and 19c Grid infrastructure. Built Oracle 18c Grid infrastructure for all the region from Dev to Prod. Worked in collaboration with AIX, Storage team in setting up Oracle 11g Grid infrastructure, Development team in performing application testing and Load Runner team in performing Capacity testing.
• Upgraded Oracle 10g and lower Non-RAC databases to Oracle 12c including data warehouse databases.
• Migrated Oracle Non-RAC databases to Oracle RAC databases.
• Migrated Oracle database from file system to ASM.
• Define database backup/restore procedures using RMAN and TSM. Manage database backups and perform recovery. Participate in DR exercise twice a year to validate recovery procedures.
• Prepare documentation and baselines. Analyze gap assessment and create road maps to overcome those gaps using Oracle best practices.
• Perform database tuning and performance monitoring at the OS level, DB level and SQL level. Analyze data and make recommendations relating to performance and efficiency of data storage. Perform capacity testing before implementing new major application release to production environment. Provide advice and solution to Application Development Team to have effective use of indexes, how to reduce waits or other advices from OEM Grid control.
• Work with the system administrator and storage administrator to perform software installations, and to configure hardware and software so that it functions optimally with the Oracle infrastructure.
• Monitor and maintain database security. Co-ordinate with Security administrator in adding, maintaining and removing users account, administering quotas, auditing, and checking for security issues.
• Provide after hours and weekend on-call support on a rotation basis.

Environment: Oracle 10g(10.2.0.1), Oracle 11g, 12c,18c and 19c RMAN, SQL*Plus, SQL*Loader, RMAN, AWR, ADR, ADDM, Scheduler, Data Pump, OEM, SQL Developer, Oracle Enterprise Manager(OEM) Grid, DBCA, DBUA, SQLTRACE, TKPROF, EXPLAIN PLAN, Golden Gate, Exadata, AWS

Confidential, Bensalem, PA

Oracle DBA

Responsibilities:

• Installed, configured, and maintained Oracle 10g and 11g and 12c on Linux and also Upgraded from Oracle 10g to 11g to 12c.
• Performed the migration from Tandem to Oracle 11g and 12c
• Expertise in designing the table structure using Visio by creating ER diagram and normalized all the tables from the scratch according to the specifications provided.
• Performed administrative maintenance, monitoring on Oracle database systems in a global 24x7 operational environment.
• Performed Database Refresh from Production to Development databases.
• . Used PL/SQL (stored Procedures, triggers, packages), SQL* PLUS, SQL* LOADER of oracle database.
• Supported different Databases like Testing, Staging and Training.
• Performed installation and configuration of Oracle 10g/11g RAC databases on Linux.
• Upgraded the Oracle 10g database to 11gR2 version and also applied patch set and interim patches whenever required to make the database software up to date.
• Installed RAC on Oracle 10g and worked on ASM feature of Oracle.
• Worked closely with developers during release and used oracle advanced features to achieve minimum downtime.
• Good experience in Performance tuning of large databases.
• Data Guard administration and maintenance.
• Monitoring Day-to-Day Backups, Log's & recovering them as per the requirement. Utilized Log Miner Technology & applied Application Database Transactions on other Databases.
• Successfully implemented Backup & Recovery using RMAN, Hot and Cold backups.
• Taking the RMAN incremental and cumulative backups.
• Scheduling the databases backup using Cron tab and VERITAS net backup.
• Perform Logical backup using full/partial export/import and data pump.
• Creating Logical and Physical database structure, Creating and altering Tablespaces. Managing Users and Resources, Granting and revoking privileges through Roles.
• Provided instance level performance monitoring and tuning for Event Waits, Sessions, Physical and Logical IO and Memory Usage.
• Supported development teams by providing SQL statement tuning and optimizing ETL procedures and removing load and query performance bottlenecks by using tools EXPLAIN PLAN, STATSPACK, and TKPROF.
• Perform Daily Monitoring of Oracle Instances, monitor users, and table spaces, Memory Structures, Rollback Segments, Logs and Alerts.
• Creation of Users and granting them the required Roles and Privileges accordingly.
• Involvement in space management, managed quotas.
• Implemented advanced features of Oracle 10g such as Automatic Database Diagnostic Monitor (ADDM), Automatic Workload Repository (AWR) for monitoring database performance.
• Configuration of Listener and Net Service names using NETCA and NETMGR.
• Cloned schemas, objects and data on new server using Data pump.
• Managing databases on multiple servers.
• Worked extensively on monitoring 10G grid control database, configuration of error notifications, installing listeners, and adding them to the grid control.

Environment: Oracle 12c 11g/10g, UNIX RHEL 5.x, OEM (Grid Control), RMAN, RAC and Data Guard, Explain Plan, Oracle Support, SQL Developer, Data Pump, Business Objects, Toad, Awr, Addm, Sql*Loader, VERITAS Net Backup, Visio.