Manager Management
Resume:
Purnachandar
*******@*****.***
Professional Summary:
Over 13 years of experience as an Oracle Database Administrator has hands on experience in database administration, production support, installation, configuration, upgrades, patches, performance tuning, backup and recovery, space management, database security, cloning, migration, shell scripting and documentation.
Extensive knowledge on database administration for Oracle 9i, 10g, 11g &12c with experience within very large scale database environment and mission critical large OLTP and OLAP systems.
Excellent experience in installation, setup and configuration of Oracle 8i, 9i, 10g and 11g in HP-UX, Sun Solaris, IBM AIX, Windows and UNIX/Linux Environment.
Expertise in upgrading the databases from Oracle 10g to Oracle 11g and Oracle 11g to Oracle 12c.
24*7 production database support with Support to developers & end-users.
Installed Oracle 11g ASM & 10g RAC software with ASM & OCFS2 File systems.
Experienced in Installation of high availability RAC environment (2, 3 and 4 node clusters) and upgraded standalone databases to 10g RAC environment.
Proficient in setting up Standby Database using shell scripts and RMAN utility tool, activating and Re-building Standby Databases both Physical and Logical supported by DATAGUARD.
Managed very large database (VLDB) of maximum size 5TB with 18 servers including 6 Productions, 6 testing, 6 Development and 3 Standby databases.
Experience working on ORACLE EXADATA Machine X4-2 for the extreme performance of the database
Experienced in Oracle Golden Gate installation, configuration, troubleshooting, and performance issues.
Created development, testing, staging, production, RAC and standby databases for OLTP, DSS and Data Warehousing using customized shell scripts and stepwise.
Having hands on experience in Hot/Cold Backup, Recovery and Cloning of databases using RMAN with VERITAS Net Backup.
Logical and physical modeling using Erwin. And Expertise using tools like Erwin, ER/Studio and Toad.
Implemented RMAN backup (Full, incremental and cumulative) and recovery, Incomplete recovery and disaster recovery using Standby database or Data Guard.
Implemented automated backup strategy using the UNIX shell script CRON UTILITY.
Performance tuning of the database - SQL Tuning, Used Tuning utilities like STATSPACK, TKPROF, EXPLAIN PLAN, AWR, ADDM and Tuning of SGA, Distribution of disk I/O, Sizing of tables and indexes.
Data loading using SQL*LOADER, Logical backups using full export and DATAPUMP.
Expertise in maintaining Database Security using security compliance auditing, and expertise in loading data from flat files using external tables, SQL*LOADER.
Having experience in ODM (oracle data mining).
Good experience of creating PL/SQL packages, Stored Procedures, Functions, Triggers and Views to retrieve, manipulate and migrate complex data sets in Oracle Databases.
Experienced in using Oracle's Transportable Tablespace (TTS) feature allows users to quickly move a user Tablespace across Oracle databases.
Database replication using snapshots, materialized views and advanced replication methods.
Experience in applying security patches to the databases.
Effective troubleshooting of database and Performance problems.
Good experience in Data Migration using export/import.
Management of Objects, Schemas, Partitioning the tables and Indexes.
Using Patrol, Foglight and Precise Monitoring Tools
Extensive knowledge of Oracle Architecture, SGA, PGA, LISTENER, TNSNames, V$ and DBA views.
Experience in implementation of enterprise databases on enterprise storage solution using Storage Area Network (SAN).
Knowledge on Oracle Support Process for Technical requests using Metalink and other support procedures.
Excellent interpersonal and strong analytical skills, Documentation & Problem-solving skills with customer service oriented attitude. A very good team player, self motivated, dedicated in any work environment.
Education: Master of Computer Applications from Madurai, India
Certifications:
Oracle 11g Implementation Specialist
Technical Skills:
RDBMS
Oracle 12c/11g/10g/9i/8i/, Oracle 11g (RAC, Data Guard & Goldengate), SQL Server 2005 and DB2.
OPERATING SYSTEMS
HP-UX 10.x, 11.x, Sun Solaris 2.5, 2.6, 8, 9, 10, AIX 5.1, 5.2, 5.3, Red Hat Linux RHEL 2.1, 3.x, 4.x, 5.x and Windows NT/2000/2003/XP.
LANGUAGES
SQL, PL/SQL, T-SQL,MYSQL, C, C++, VB, UNIX Shell Scripting, Ksh, bash and Perl Scripting.
SOFTWARES, APPLICATIONS & TOOLS
DBCA, DBUA, Oracle Data Guard, OEM (GC), RMAN, ASM, Clusterware, VCS, Shareplex, SQL*PLUS, SQL*LOADER, EXP, IMP, Data Pump (expdp, impdp), TOAD, ERwin, TOAD Data Modeler, Rational Rose, VERITAS Net Backup, DBArtisan, SAN, SQL TRACE, EXPLAIN PLAN, TKPROF, STATSPACK, AWR, and ADDM.
WEB TOOLS
HTML, XML, JSP, HTTP, TCP/IP, FTP, SFTP, SCP, EMC Storage, Metalink, MS Visio.
Professional Experience:
1
Project Name: Scotia IMS, Scotiabank, Canada
Client
Scotiabank
Role
Sr. Oracle DBA Toronto, Canada (Onsite)
Organization
Tech Mahindra Limited
Duration
(Nov/2011) – Jan 2017
Description: Scotiabank is one of North America's premier financial institutions, and Canada's most international bank. A team of more than 70,000 employees, Scotiabank Group and its affiliates offer a diverse range of products and services, including personal, commercial, corporate and investment banking, to some 18.6 million customers in more than 50 countries around the world in Caribbean and Central America, Mexico, Latin America, Europe and Asia.
Responsibilities:
Installation, configuration, maintenance and tuning of Oracle 10g and 11g on Red hat 5.0, IBM-AIX 5.3.
Successfully upgraded Oracle 11g (11.2.0.3) to Oracle 11g (12.1.0.2) on IBM-AIX nodes.
Involved in Installation and configuration of Oracle 11g RAC using Clusterware and ASM.
Successfully Migrated Non RAC single instance to Real Application Cluster (RAC) database instances.
24x7 remote support and on call Database support for Database developers & end-users.
Experienced in the installation of Oracle Grid Control in Server (OMS Oracle management Server) and installing the Agents in all the production, test and development databases and configuring them.
Experienced in Design, implementation and generating documentation of Oracle 11g Data Guard on both physical/logical standby databases in high availability mode.
Implemented Data guard, creating both Logical and Physical Standby databases in 11g RAC environment for the Production databases.
Migrated a number of our databases from non-Exadata servers to the Exadata Database Machine using the RMAN 11g Duplicate standby from Active database method.
Improved SQL query performance on database machines by enabling Exadata Smart Scan and Storage index features.
Implemented and used Exadata Hybrid Columnar Compression (EHCC) for large objects in a Multiterrabyte Databases.
Writing and modifying UNIX shell scripts, Perl scripts to manage Oracle environments and for Backend Oracle Processes.
Install, configure and support uni-directional and bi-directional Oracle-to-Oracle replicated environments utilizing GoldenGate.
Installed GoldenGate Veridata and Repository Schema to monitor GoldenGate replication.
Successfully configured and installed Oracle GoldenGate for Schema/Table replication.
Configured DDL Replication in GoldenGate to enable DDL Synchronization.
Troubleshoot GoldenGate erroneous Skipping Transactions using LOGDUMP utility.
Developed SQL*PLUS & PL/SQL scripts for Extraction, Transporting & Transforming (ETL) data from Production databases to Data Warehouse Databases.
SQL tuning and Database performance tuning has been done based on reports generated by SQL Trace, TKPROF, STATSPACK, Explain Plan, AWR, ADDM and monitor the database performance on daily basis.
Planning Backup/Restoration Strategy, Planning and scheduling Backups, taking Logical Backups (with Export/Import Data pump utilities).
Creating & Managing Database Structures, Storage Allocations, Table/Index segments, Rollback segments, Constraints, Database Access, Roles and Privileges.
Performance tuning of Queries by maintaining Aggregates, Compression, partition, indexing and use of Hints, Stored outlines, Statistics for the same.
Performance tuning and diagnosing DBMS and individual Production databases. Organized various migration review meetings with the application team to discuss the migration strategy based on their requirements.
Performed policies on data confidentiality, integrity, availability, and auditability, Based on Access Controls for Access to Data at the database level.
Performed SQL and PL/SQL tuning, oracle contention and monitored production database using automatic workload repository (AWR), automatic database diagnostic monitor (ADDM) and automatic session history.
Logical and Physical Database Modeling using CA Erwin 4.1.
Automated the nightly RMAN backups for the Production and Test Databases in Crontab.
Creating and Scheduling Oracle Backend Process Jobs in Crontab.
Cloning & duplicating databases using scripts as well as RMAN.
Expertise in recovering the database. Performed complete recovery, data file recovery, incomplete recovery.
Experienced in Database Security User Management, Privileges, Roles, Auditing, Profiling, Authentication.
Implemented VERITAS Net Backup using RMAN (Recovery Manager) as a media management layer.
Applying security patches both Server side and Client side and Performed testing.
Worked closely with the Oracle developers for the better performance in Applications in writing the Packages, Triggers, Mat Views and Indexes on the tables.
Used Secure SCP & FTP extensively for the File transfers from machines to remote server.
Experienced in documentation, provided documentation for database design, analysis, modifications, creating schemas etc.
Implementation of Oracle & Application Software Patches and maintaining SW License and maintenance agreements.
Resolved TAR issues 24x7 while assisting the functional team and My oracle support (Metalink) and managing database security.
Environment: Windows 2000/2003/XP, AIX 5.2/5.3 and Red Hat Linux 5.0, SOA,Oracle 10g and 11g, TOAD 9.0, Oracle Enterprise Manager (GC), RMAN, RAC, DataGuard, ASM, SCP/SFTP, Shareplex, Erwin 4.0, TKPROF, Explain plan, AWR, ADDM, SQL* Plus, PL/SQL, SQL* Loader, T-SQL, SQL Server 2005, Visual Source Safe.
2
Project Name: Bank of America Merrill Lynch
Client
Bank of America Merrill Lynch
Role
Sr. Oracle DBA
Organization
Bank Of America Continuum India Ltd
Duration
(Apr/2009) – (Sep/2010)
Description: : Bank of America is one of the world's largest financial institutions, serving individual consumers, small and middle market businesses and large corporations with a full range of banking, investing, asset management and other financial and risk-management products and services. The company provides unmatched convenience in the United States, serving more than 59 million consumer and small business relationships with more than 6,100 retail banking offices, more than 18,000 ATMs and award-winning online banking with more than 25 million active users
Responsibilities:
Responsible for administration and supporting Oracle 10 and 11g databases.
24x7 Production database administration, support and monitoring to ensure a proactive problem
recognition and resolution of database issues.
Successfully migrated databases from windows2000/2003 running oracle 9i over to Linux boxes 10g.
Installation, Upgrade and Configuration of Oracle 9i and 10g Databases.
Involved in designing of disaster recovery plan using Data Guard, and High Availability using RAC.
Schemas refresh using Export/Import Pump, Creating the database table spaces, tables, indexes, setting privileges and user logins.
Configuration, Administration and tuning of Oracle 10g and 9i RAC.
Used cross platform transportable table space (TTS) to transport tablespaces across platforms.
Data Refresh in Test and Integration Databases using Transportable Table spaces.
Performed Setup Recovery Manager (RMAN) and Flash Recovery in RAC Environment.
Oracle Streams Bi-Directional replication implementation at Table, Schema and Database Level.
Implemented backup strategies using hot/cold, exp/imp used on the business req.
Cloning databases using scripts as well as RMAN and performed Tablespace point in time recovery (TSPITR) using RMAN.
Implemented Streams replication between RAC and non RAC database environments.
Installed Oracle 10g Enterprise Manager (Grid Control) for diagnosing and monitoring performance related problems and configured with Application servers on test databases.
Assisted a team of DBA’s in migration of databases from Oracle 9i Release 2 to Oracle 10g Release 2.
Worked on Automatic Storage Management (ASM) with SAN Storage for managing data in EMC Symmetrix.
Monitoring and tuning using tools like Enterprise Manager GRID, Oracle cost Based optimizer (CBO), SQL analyzer, automatic checkpoint tuning, SQL Advisors, Performance Manager, and Statspack.
Performed conversion single instance to Real Application Cluster (RAC) database instances.
Utilized Oracle Streams to capture, propagate, and apply the transfer of data, transactions, and events within managed databases.
Provided database/application tuning including as reducing lock contention, analyzing objects.
Downsizing and defragmenting the Very Large Databases by export / import, cloning those using RMAN duplicate features and then upgrading them to Oracle 10g and Production to development refresh.
Storage Management Managing Space, Table spaces, Segments and Extents, Rollback Segments & Data Dictionary.
Experienced on Database Security by monitoring User Management, Privileges, Roles, Auditing, Profiling, Authentication and Risk management.
Used Oracle Advanced Replication feature to set up multi-master replication, dealt with conflict resolution and performance issues.
Unix Shell scripting in csh, ksh for automating startup/shutdown, backup and recovery, Import and export procedure of databases, getting system alerts.
Experienced in documentation, provided documentation for database design, analysis, modifications, creating schemas etc.
Environment: HP-UX 11, Red Hat Linux4, Windows 2000/2003, Oracle 9.2.0.8/10.2.0.3/11g, DB2, Enterprise Manager GRID, RUP, RMAN, SAN/NAS, HSM, 10g RAC, Streams, CDC, Data Guard, SQL*Plus, PL/SQL, ASM, J2EE, ToadV9.7 & SQL, Navigator V6.1.
3
Project Name: Merrill Lynch
Client
Merrill Lynch
Role
Oracle DBA
Organization
Satyam Computer Services Limited, India
Duration
(Apr/2007) – (Apr/2009)
Description: This is a production database support project for client Merrill Lynch USA, UK. There are about one thousand databases which are supported by the DBA team. DBA support is done from onsite US, UK and Offshore Hyderabad, India. The databases consist of financial data and are very critical databases these are to be supported round the clock. Immediate attention to client requirements and also to work with the end users in solving their problems. The Business Process of Merrill Lynch is strictly followed here
Responsibilities:
Installed RAC on Oracle 10g release1 and worked on ASM feature of Oracle.
24x7 Production database administration, support and monitoring to ensure a proactive problem
Recognition and resolution of database issues.
Provided instance level performance monitoring and tuning for Event Waits, Sessions, Physical and Logical I/O and Memory Usage.
Performance Tuning i.e. Tuning RAC, tuning applications, shared pool, I/O distribution, rollback segments, buffer cache, redo mechanisms
Oracle Grid Control Management Server Installation.
Used transportable tablespaces (TTS) to move the data Oracle on a different platform and also much faster than performing either an export/import or unload/load of the same data.
Implementation of 10g Data Guard and Bi-directional streams implementation.
Handling large database environments using Oracle Enterprise Manager (OEM) on daily basis observing the performance of the production database and constantly active regarding performance and space management issues and accordingly providing on-fly solutions to make database healthy and running.
Made performance improvements to the database by building Partitioned tables, Index Organized Tables, Materialized Views and Bitmap Indexes.
Supported development effort by providing SQL statement tuning and optimizing ETL procedures and removing load and query performance bottlenecks by using tools Explain Plan, SQL Trace, TKPROF, TOAD and Oracle Enterprise Manager.
Performance tuning of Queries by maintaining Aggregates, Compression, partition, indexing and use of Hints, Stored outlines, Statistics for the same.
Created Users, Groups, Roles, Profiles and assigned users to groups and granted privileges and permissions to appropriate groups.
Implemented and followed data security standards and Security User Management, Privileges, Roles, Auditing, Profiling, Authentication and Risk management.
Performed application migrations to non-cluster databases to cluster databases.
Devised & Implemented backup strategies using hot, cold, and exports based on the business requirements.
Implemented Veritas Net Backup-using RMAN (Recovery Manager) as a media management layer.
Applying security patches both Server side and Client side and Performed testing.
Cloned schemas, objects and data on new server using exports from 9i database and imported in 10g using Oracle data pump.
Performed conversion Non RAC single instance to Real Application Cluster (RAC) database instances.
Trouble shooting of various database performances by proper diagnosis at all levels like SQL, PL/SQL, database design, database tables, indexes, Instance, memory, operating system and java calls.
Worked with production DBA team in perfect coordination with seniors and team members.
Environment: Oracle database 10g (10.1.0.5 to 10.2.0.4), 9i (9.2.0.8), Redhat4, HP-UNIX 10.0, RAC, TOAD, TTS, Erwin 7.2, J2EE, ASM, Oracle Enterprise Manager, Network setup and Management, ASM, RMAN, SQL*Plus, PL/SQL, SQL*Loader.
4
Project Name : Citi Bank Data Center
Client
Citi Bank
Role
Database Administrator
Organization
Wipro
Duration
(Oct/2005) – (Apr/2007)
Responsibilities:
24x7 Database administrations, support and monitoring to ensure a proactive problem recognition and resolution of database issues.
Migration of Oracle databases from windows to Linux.
Applied patches to Oracle Databases and Oracle Applications.
Upgrading development and production databases to Oracle 10g.
Proactive database monitoring using 10g grid monitoring tool.
Database tuning using SQL-Trace, STATSPACK, AWR, EXPLAIN PLAN and TKPROF.
Extensive Performance Tuning, Memory (SGA) Tuning, net backup, EMC (Time finder and SRDF), RAID, RAW Devices.
Performed database cloning to setup test and development databases.
Responsible for optimizing the queries and application tuning.
Performed SQL tuning and assist developers with coding PL/SQL.
Provided support to Application Database Administrators in designing the database.
Used RMAN for backup and recovery. Performed Hot, Cold and Logical backups. And performed backup validations using RMAN.
Management of schemas, objects partitioning the tables & indexes.
Automation of data load using Korn shell scripting and SQL*Loader.
Responsible for setting and managing user accounts, and granting required privileges to users.
Performed other DBA activities like including space management and performance monitoring.
Experienced in Oracle Database monitoring, troubleshooting and resolve the issues.
Environment: Oracle 8i/9i,10g SQL Server 2000, Sun Solaris 8.0, SUN SPARC, HP UNIX, Windows 98/NT/2000, Oracle Enterprise Manager, SQL* Loader, T-SQL, STATSPACK, TKPROF, EXPLAIN PLAN.
5
Project Name : Geographical information system
Client
Verizon
Role
Database Administrator
Organization
Cadsys India (Ltd)
Duration
(Jan/2005) – (Jun/2005)
Description: Verizon is the nation's largest telecommunications company and leader in fiber optics, Verizon offers phone, Internet, It provides local and long distance service. high-speed Internet access and TV service primarily in the mid-Atlantic and northeastern U.S. Verizon is a global leader in delivering innovative communications
Experienced in Oracle Database monitoring, troubleshooting and resolve the issues.
Installation and Configuration of Oracle Related Products.
Minimize the database down time and troubleshoot the database and application fast
Perform day to day Database Maintenance activities such as observing database object size, its growth, log switch timing, alert log files etc.
Managing rollback segments redo log files to avoid the resource contention.
Performed a time based recovery of the database using on-line archived log files
Removing unwanted data and columns from database in year end
Database Migration from Oracle 8i to oracle 9i using export and import
Taking logical backups by using Export Utility.
6
Project Name : Automated Office Procedure System
Client
National Remote Sensing Agency (NRSA)
Role
Oracle Database Administrator
Organization
Hikae Electronics Pvt Ltd
Duration
(May/2002) – (Dec/2004)
Description: National Remote Sensing Agency is an operational center under Department of Space, Govt. of India, for receiving and distributing the remote sensing data for applications like Natural Resource Management, Disaster Management and Geographical Information Management.
Installed Oracle 8.1.7
Created the database
Design and physical layout of the server
Creating oracle users and assigning roles and privileges
Created separate tablespaces for various users.
Separated index data including indexes created by primary keys from transaction tablespaces.
Corrected chained rows
Tuned and optimized rollback segments
Estimated the tablespace growth for heavy users
Trained user on several topics like backup, recovery, troubleshooting for most common problems and daily checkup of database
Employer Details:
Nikhil Pendem Sr. IT Recruiter
Orabase Solutions LLC.
Contact by E-mail: ******@****************.***
Contact by Phone: 818-***-****(D) www.orabasesolutions.com E-Verified Company.
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