Biswajit_Sarkar_Database_Administrator

Biswajit Sarkar(Oracle Database Administrator) 1
BISWAJIT SARKAR
OracleDatabaseAdministrator Mob: 647-291-4494
Canada Permanent Resident Email: biswajit.n.sarkar@gmail.com
Skype: biswajit.n.sarkar
Professional Summary
1. Having More than 9 Years of hands-on OracleExperience mostly with Oracledatabase(8i/9i/10g/11g/12C) & EBS
(R12.2.5/R12.1.3/11iCU2) implementation, Upgrade and support/administration.
2. Worked as partof a team and provide 7x24 Database & Application support of more than 30 Production & 60
Non-Production environments with databasesizerangingfrom 800GB to 5 TB.
3. Implemented and configured oracleDatabasewith four-node 11gR2 Real Application Cluster Grid (RAC) using
scan/vip and ASM/cook file-system.
4. Performed Oracle Database install/Administration and Database Upgrade from 8i/9i to 10g, 11gR2, 12C.
5. Performed Oracle EBS Upgrade from 11i (11.5.8/11.5.9/11.5.10CU2) to R12 (R12.0.6/R12.1.3/R12.2.5).
6. Planned & Migrated Database in Homogeneous and Heterogeneous scenario likeSolaris/HP-UX/AIX to Linux
using X-Platform Transportable Tablespace/Database Migration, Export-Import
7. Performed Weblogic/Fusion Middleware Installation/Administration.Specially worked with Discoverer, Vertex,
OBIEE, Oracle Enterprise Manager and configured with EBS.
8. Performed EXADATA databaseand GI-Home CRS Patching(BP21/29). Also performed EXADATA administration
supportand Performance monitoringusingcellcli.
9. Planned & Performed Database Backup & Restore using RMAN, Hot-Backup, BCV
10. Performed OracleDatabase& EBS Disaster Recovery drill with various backup/restorestrategies and
configurations.
11. Implement and configured Local & Remote Physical Standby as well as Snapshot Standby databases.
12. Contributed automation of Install,differentsystem alertsetup, Cron-Job & cloningwith Unix shell script writing.
13. Performed DatabasePerformance Tuning especially with AWR analysis,ORA-debug Trace, Trace & TKPROF
analysisof DB-Session,SGA & PGA Target management. Also Performed Table access TuningusingExport-Import
Gather Stats, TableReorganization & Index Rebuild,SQL-Profiling.
14. Planned & implement OracleGolden Gate 12C between oracledatabases.
TechnologyExperience
Application EBS 11i & R12 (12.2.5)
Databases Oracle(8i/9i/10g/11gR2/12C)
WebLogic/Fusion middleware Discoverer,OBIEE, Vertex, OEM 12C, SOA Suite
High Availability 10g & 11gR2 RAC, 11g Data-Guard
Other Tools & IDE’s Toad, SQL-Developer
Languages SQL, PL/SQL
OperatingSystems HP-UX, Solaris,Red-HatLinux, EXADATA, Windows server 2003

Work Experience - ProjectsPerformed& Key ResponsibilitiesHandled
1. Oracle India Pvt. Ltd. (Hyderabad, India) Aug-2015 to Feb-2016
Role: I was Offshore Lead and my duties were to technically help my offshoreteam as well as performingnormal day-to-
day DatabaseAdministration activities and upgrade.I used to provideexperience-based guidanceand implement of
Oracledatabasesolutions,tools,architectureand approaches. Here in Oracle,I have worked as a shared resourceto work
with multipleclient-projects in parallel.Mostly all our projects areDatabase& Application Upgradeand post upgrade
supportof 6-7 months duration.
Client Project Performed & Key Responsibilities handled:
 Metrolinx, Canada- EBS OLTP Upgrade from R12.1.3 to R12.2.4 and Databaseupgrade from 11.2.0.3 to 12C1.
Also Solaris server upgraded from 10 to 11.
 Databaseupgrade from 10.2.0.5 to 11.2.0.4 and 11.2.0.3 to 12C.
 EBS upgrade from R12.1.3 to R12.2.4.
 DatabaseBackup,Restoration & Recovery usingRMAN.
 HuntingtonBank, USA - Hosted and managed Oracledatabases and applicationsin the Oracle Cloud. Also
performed non-RAC to RAC conversion.
 Implemented and converted non-RAC OracleDatabases with four-node 11gR2 RAC using scan/vip and cook
file-system. Also performed RAC troubleshooting(likeNode Eviction,OCR & Voting Disk failure).
 Complete installation of Weblogic/Fusion Middleware product likeDiscoverer, Vertex,OBIEE and Oracle
Enterprise Manager and configured with EBS.
 Performed DatabasePerformance Tuning especially with AWR analysis,ORA-debug Trace, Trace & TKPROF
analysisof DB-Session,SGA & PGA Target management. Also Performed Table access TuningusingExport-
Import Gather Stats, TableReorganization,Index Rebuild,SQL-Profiling,full databaseexport/import.
 New Jersey Transit, USA - EBS OLTP Upgrade from 11iCU2 to R12.1.3 and Databaseupgrade from 10.2.0.5
to 11.2.0.5. Also data migration from HP-UX to OracleLinux Exadata Box.
 Performed X-Platform data migration using TransportableTablespacefrom HP-UX to OracleLinux Exadata
Box.
 Databaseupgrade from 10.2.0.5 to 11.2.0.4.
 Implement and configured Local & Remote Physical Standby as well as Snapshot Standby databases.
 Contributed automation of Install,differentsystem alertsetup, Cron-Job & cloningwith Unix shell script
writing.
 Simplex, USA- EBS OLTP Upgrade from R12.0.6 to R12.2.5 and databaseupgrade from 11.2.0.3 to 12C1. Also
platformmigration from AIX to Linux.
 Performed X-Platform data migration usingFull DBExport-Import from AIX to Linux.
 Databaseupgrade from 11.2.0.3 to 12C.

2. Tata Consultancy Services Ltd. (Pittsburgh, USA) OCT-2007 to Aug-2015
Role: In my initial days,I was atoffshoreand worked as an OracleDBA Team Member. Then I have been deputed for 4
years to Pittsburgh, Pennsylvania and I have worked with direct Clientas a singleescalation point for Production & Non-
Production Databasesupport.My rolewas Onsite Lead/SME and my duties were to work normal day-to-day Database
Administration activities in North-America Business Hour as well as to technically help my offshore team. I used to provide
experience-based guidanceand implement of Oracledatabasesolutions,tools,architectureand approaches. Here I have
worked mostly with two USA clients – ALCOA & TRACO.
Client Project Performed & Key Responsibilities handled:
 ALCOA, USA - As OracleDBA my duties and responsibilities included,butare not limited to, databasedesign,
supportand maintenance of 90+ OracleDatabases of different environment e.g. production,test, development and
staging(This include4 major Datacenters in 4 geographic Region). This included 30+production databases and 60+
development/test/staging databases of version 10gR2 and 11gR2 and runningon Linux EXADATA Box, HP-Unix &
Windows with 11gR2 RAC, Data-guard,OracleEnterpriseManager, Weblogic/Fusion middleware/SOAadministration.
Sizes of the databases varied from 50 GB to 5 TB.
 Work as partof a team and provide 7x24 Database & Application support of Production & Non-Production
environments. Also worked as Consulting and Product Management with Application,Infrastructureand
Network team simultaneously to do quick fix on an escalated issueand provided subjectmatter expertise in
production and non-production databases and technical expertiseto Application & Infrastructureteams.
 Implemented and configured oracledatabases with four-node 10g/11gR2 Real Application Cluster Grid
(RAC) usingscan/vip and ASM/cook file-system.Also performed troubleshooting(likeNode Eviction,OCR &
Voting Disk failure).
 Performed EXADATA databaseand GI-Home CRS Patching(BP21/29). Also performed EXADATA
administration supportand Performance monitoringusingcellcli.
 Installed & implement 11gDiscoverer & Vertex with Weblogic & Fusion Middlewareand configured with
EBS.
 Performed Database& EBS Disaster Recovery drill with variousbackup/restorestrategies and
configurations.
 Implement and configured Local & Remote Physical Standby as well as Snapshot Standby databases.Also
performed many maintenance and Troubleshootingof Standby databases.
Import Gather Stats, TableReorganization & Index Rebuild.Sometimes assists in database
reorganization/restructuringperformingfull databaseexport/import.
 Worked with Application Development/Enhancements, the business linecustomer and the project
management team on databaseconfiguration and provideDBA supportto create new schema for the
development of new software products.
 Performed databaseand application cloning with different Backup & configurations.
 Planned & Performed Application & Database Backup using RMAN, Hot-Backup, BCV and performed
Database Recovery in different situation likefull DatabaseRecovery usingRMAN and on demand partial
database/tablerecovery from BCV and Snapshot Standby.
 Implementing & MonitoringOEM & different cron alerts in order to effectively utilizethe databasesystem
and remain within the security and integrity control limits.

 Worked on SLA based ticketing system tools and departmental servicerequests for fixingissues and
completion of outages in order to provide consistent,useful serviceand information to all department
personnel.
 Follows standard incident,problem and change management processes to implement changes and month
end outages.
 Follows established security compliance,auditingand access management practices.
 Worked on OracleAutomatic Space Management (ASM) activity for file-system.Also performed Capacity
Monitoring both short and long-term in collaboration with development resources,system administrators
and system architects.Had awareness of availablephysical storageand initiates requests for new devices.
 Maintains accurateand up-to-date databasesystem documentation with structureof the databaseand
proposes data standards for both software and physical protection. Also adheres to operational and
documentation standards and processes includingstandard build,version control and migration processes.
writing.
 TRACO, USA – Mostly performed couple of databaseand application upgrade project.EBS OLTP & OAPS
Upgrade from 11i (11.5.8) to R12.1.3 with databaseupgrade from 8i to 11.2.0.4.
 Performed X-Platform data migration usingTransportableTablespacefrom solaris to Red-Hat Linux.
 Databaseupgrade from 8.1.7.4 to 11.2.0.4.
 EBS upgrade from 11i (11.5.8) to R12.1.3.
 Implemented and converted non-RAC OracleDatabases with four-node 11gR2 RAC usingscan/vip and cook
file-system. Also performed RAC troubleshooting(likeNode Eviction,OCR & Voting Disk failure).
 DatabaseBackup, Restoration & Recovery usingRMAN.
 Implement and configured Local & Remote Physical Standby as well as Snapshot Standby databases.
writing.
Import Gather Stats, TableReorganization,Index Rebuild,SQL-Profiling,full databaseexport/import.
Education
Master of Engineering in Chemical Engineeringfrom Jadavpur University,Kolkata, India
Certifications& Training
 OracleDatabase11gCertified Associates (OCA)
 Oracle10gReal Application Cluster Certified
 Oracle11gEXADATA Certified
 OracleBig-Data.

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