A DB2 Database Administrator (DBA) is responsible for designing, installing, maintaining, and securing IBM DB2 databases (LUW or z/OS), ensuring high performance, availability, and data integrity. Core duties include performance tuning (SQL optimization, indexing), backup/recovery (HADR), capacity planning, security management, and implementing database upgrades/patches.

• Database Design & Implementation: Designing, creating, and managing physical database structures, tablespaces, and schemas.• Performance Tuning & Optimization: Monitoring database performance, analyzing SQL queries using tools like EXPLAIN, tuning database configuration parameters, and running maintenance utilities (REORG, RUNSTATS).• Backup & Recovery: Developing and managing comprehensive backup/recovery, disaster recovery,



and High Availability Disaster Recovery (HADR) strategies to ensure minimal downtime.• Security & Compliance: Managing database users, roles, and permissions; ensuring data security, audit compliance, and implementing security frameworks.• Maintenance & Upgrades: Performing patching, version upgrades, and migrations with minimal impact on production.• Troubleshooting & Support: Resolving complex production issues, identifying bottlenecks, and providing 24/7 support.• Automation & Scripting: Developing Shell or Python scripts to automate routine tasks, monitoring, and database management.

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