DB2 Systems Programmer

Title: DB2 Systems ProgrammerLocation: Chennai, Bangalore, NoidaMode: Hybrid ModelRoles and Responsibilities:Key Responsibilities:- DB2 Subsystem Management:- Plan, prepare, and execute DB2 for z/OS subsystem installations, upgrades, and migrations (e.g., from DB2 12 to DB2 13, or between Function Levels).- Apply IBM DB2 maintenance (PTFs, APARs, SPEs) regularly using SMP/E to ensure system integrity, resolve issues, and enhance functionality.- Configure and maintain DB2 PARMLIB, DSNZPARM, and other critical DB2 initialization parameters.- Perform DB2 subsystem restarts (IPLs, Quiesce/Start) as required for maintenance and configuration changes.- DB2 Tool and Utility Support:- Install, configure, upgrade, and maintain IBM DB2 utilities (e.g., REORG, RUNSTATS, COPY, LOAD, UNLOAD).- Install and support various Independent Software Vendor (ISV) tools for DB2 (e.g., BMC DB2 tools, Broadcom/CA DB2 tools, IBM DB2 Admin Tool, IBM Data Studio, etc.) used for performance monitoring, backup/recovery, administration, and development.- Troubleshoot issues related to DB2 utilities and ISV tools.- Performance Monitoring and Tuning:- Monitor DB2 subsystem health, performance, and resource utilization using tools like Omegamon for DB2, DB2 PM, SMF, RMF, and other performance monitors.- Analyze performance data to identify bottlenecks within DB2 and recommend tuning improvements at the subsystem, buffer pool, and thread level.- Assist DBAs and application teams in optimizing SQL queries and application performance.- Problem Diagnosis and Resolution:- Provide expert-level support for DB2 incidents, including problem determination, diagnosis (e.g., analyzing dumps, logs, traces), and resolution in a timely manner.- Collaborate with IBM support and ISV vendors to resolve complex issues.- Participate in on-call rotation for 24/7 support of critical DB2 environments.- Collaboration and Coordination:- Work closely with DB2 DBAs to understand their requirements, provide technical guidance, and ensure the smooth operation of database environments.- Collaborate with z/OS Systems Programmers on shared resources, system-level issues, and overall mainframe health.- Liaise with application development teams for DB2-related changes, new application deployments, and problem resolution.- Coordinate with mainframe operations for scheduled maintenance and incident response.- Automation and Scripting:- Develop and maintain JCL, REXX, CLISTs, and other scripts for DB2 administration, monitoring, and automation tasks.- Disaster Recovery and Business Continuity:- Assist in the planning, testing, and execution of disaster recovery procedures for DB2 subsystems.- Ensure the high availability and recoverability of critical DB2 environments.- Documentation and Best Practices:- Create and maintain comprehensive documentation for DB2 installations, configurations, operational procedures, and troubleshooting guides.- Adhere to ITIL best practices for change management, incident management, and problem management within the DB2 domain.- Security and Compliance:- Implement and enforce security best practices within DB2, working with security administrators (RACF/ACF2/Top Secret) to define and manage DB2 security profiles.- Ensure compliance with internal security policies and external regulatory requirements for DB2 data.Required Skills and Experience:- 5-8 years of hands-on experience as a Mainframe DB2 Systems Programmer.- In-depth knowledge and hands-on experience with IBM DB2 for z/OS installation, configuration, maintenance, and migration (preferably including recent versions like DB2 12 or 13).- Strong proficiency in JCL, TSO/ISPF, and SMP/E.- Extensive experience with IBM DB2 utilities (COPY, RECOVER, REORG, RUNSTATS, LOAD, UNLOAD).- Proven experience with installation and support of leading DB2 ISV tools (e.g., BMC DB2 tools, Broadcom/CA DB2 tools, IBM DB2 Admin Tool, Omegamon for DB2).- Solid understanding of DB2 architecture, data sharing, buffer pool management, and logging.- Experience with DB2 performance monitoring, tuning, and problem diagnosis (e.g., reading traces, interpreting DSNZPARM settings).- Ability to read and interpret DB2 dumps for problem determination.- Proficiency in REXX, CLISTs, or other scripting languages for automation.- Familiarity with z/OS operating system fundamentals, including JES2/JES3, SMS, VSAM.- Excellent analytical, problem-solving, and troubleshooting skills.- Strong communication (written and verbal) and interpersonal skills, with the ability to collaborate effectively with various teams.- Ability to work independently and manage multiple priorities in a dynamic environment.Desired Skills and Experience (Plus Points):- Experience with Parallel Sysplex and DB2 Data Sharing environments.- Knowledge of IBM MQ for z/OS, IMS, or CICS connectivity with DB2.- Experience with DB2 DDF (Distributed Data Facility) and remote connectivity.- Certifications related to DB2 for z/OS.