I have extensive experience in Oracle Database performance tuning, having worked on optimizing queries, indexing strategies, and SQL execution plans. I regularly use tools like Oracle Enterprise Manager and SQL Trace to identify performance bottlenecks and implement solutions such as rewriting queries, creating appropriate indexes, and adjusting database parameters to ensure optimal performance.

In a production environment, I implement a robust backup and recovery strategy using Oracle Recovery Manager (RMAN). This includes full, incremental, and archived log backups to ensure data integrity. I also conduct regular recovery drills to verify the effectiveness of the backup strategy and ensure minimal downtime in case of a failure.

I have hands-on experience with Oracle RAC, including installation, configuration, and maintenance. I understand the importance of shared storage and network configurations for high availability. I have also worked on troubleshooting RAC-specific issues, such as node failures and network latency, to ensure continuous database operation.

I ensure database security by implementing strong authentication and authorization mechanisms, such as Oracle Wallet and SSL for secure connections. I also regularly review and update user roles and privileges, apply security patches, and monitor for potential vulnerabilities using Oracle Audit Vault and other security tools.

I have significant experience with Oracle Data Guard, including setting up physical and logical standby databases for disaster recovery and high availability. I ensure that the standby database is always in sync with the primary database through proper configuration of redo transport services and apply services. I also conduct failover and switchover drills to ensure readiness for disaster scenarios.