JCL ⭐ Featured
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Q: Explain NOTIFY parameter

Answer:
NOTIFY=userid sends message when job completes. On JOB card. Multiple userids: NOTIFY=(USER1,USER2). Notifies success or failure. TSO users get message at terminal. Essential for batch monitoring. Commonly NOTIFY=&SYSUID for submitter.
notify message completion
JCL ⭐ Featured
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Q: How to check job status?

Answer:
SDSF DA/ST panels show jobs. TSO STATUS command. JES2 J'jobname'. JESMSGLG shows JCL, allocation. JESYSMSG has error details. Return code in JESMSGLG. Condition codes per step. Check SYSOUT for program output.
status sdsf monitoring
CICS ⭐ Featured
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Q: What is CICS monitoring?

Answer:
CICS monitoring facilities. SMF 110 records. CICS statistics. Transaction analysis. Performance data. OMEGAMON for real-time. Capacity planning.
monitoring smf statistics
DB2
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Q: How to monitor DB2 performance?

Answer:
Use OMEGAMON, DB2PM, or built-in monitor. Check: buffer pool hit ratios, lock waits, CPU time, elapsed time. DISPLAY commands show real-time. Statistics trace for analysis. EXPLAIN for query level.
monitoring performance statistics