•Provide day-to-day Database support that includes monitoring, troubleshooting, and performance tuning of development and production environments.•Installing and configuring AWR for peak performance.•Tuning SGA, Rollback segments , Optimize Sort Operation•Create appropriate indexes for queries and suggesting changes to application developer•Design and Perform backup schedules.•Testing the production archive log files by performing time-based recoveries on simulation databases•Monitoring Databases Performance through ORACLE ENTERPRISE MANAGER (OEM).•Talked to Oracle Support, opened TARs and taken pro-active corrective actions.•Administration of Oracle 10g (RAC) on multi nodes. Close coordination and interaction with system administrators for hardware and system reconfigurations.•Configuration of Maximum High Availability features like DataGurad, monitoring and automation of switchover and fail over.•Tuning the database Oracle 10G/11G automated inbuilt features.•Taken care of DBA activities in the organization•Startup and Shutdown of Oracle Database•Routine DBA duties like analyzing schema's, monitoring database growth•Recovery of Standby Database •Up-gradation of database