3699620 - DB6: db2start fails due to SQL1072C error

• When shutting down the SAP system, the database was not correctly stopped, resulting in the following error while starting Db2:
  
  "SQL1072C The request failed because the database manager resources are in an inconsistent state. The database manager might have been incorrectly terminated, or another application might be using system resources in a way that conflicts with the use of system resources by the database manager."

• db2diag.log
  
  2025-11-13-07.05.25.726751+120 E164279279E508        LEVEL: Warning (OS)
  PID     : 27791                TID : 139743146661056 PROC : db2star2
  INSTANCE: db2abc               NODE : 000
  HOSTNAME: abc123
  FUNCTION: DB2 UDB, SQO Memory Management, sqloMemCreateSingleSegment, probe:100
  CALLED  : OS, -, shmget                           OSERR: EEXIST (17)
  DATA #1 : unsigned integer, 4 bytes
  1046555233
  DATA #2 : Current set size, PD_TYPE_SET_SIZE, 8 bytes
  222494720
  DATA #3 : Hex integer, 4 bytes
  0x00000781

• SAP on IBM Db2 for Linux, Unix and Windows
• Linux or Unix

db2start, SQL1072C, shmget, OSERR, EEXIST (17) , KBA , BC-DB-DB6 , DB2 Universal Database for Unix / NT , BC-DB-DB6-DBA , Database Administration , Problem