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Production incidentIntermediate15 min

Incident: AEY9 after the Db2 maintenance

INC22220 · 07:15 · CICSLRN1
PAGE 07:15 SEV2 - BALQ abends AEY9 at every branch
Db2 DBL1 maintenance CHG4460 ran 06:00-06:25, marked complete

BALQ shows a customer's balance; its program BALPGM reads Db2 subsystem DBL1 with EXEC SQL. The branch menu MENU does not use Db2. Db2 DBL1 was stopped at 06:00 for maintenance (change CHG4460) and restarted at 06:25; the change is marked complete. Since the branches opened, every BALQ abends while MENU works. Find out why and get balances showing again.

What you will do

  1. Reproduce it and compare with a transaction that does not use Db2
  2. Check the region's connection to Db2 and the log
  3. Restore the connection and prove it

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