3613253 - DB6: Performance issue due to backup with 3rd party vendor library

• Database performance issue happens after starting an online backup with 3rd party vendor library.
  
  
• High swap utilization is observed.
  
  
  
• OS warning message is seen in db2diag.log after backup starts. 
  
  

  2025-05-28-11.00.06.959963+000 E19934171E489         LEVEL: Info
  PID     : 31095                TID : 139761423476480 PROC : db2sysc 0
  INSTANCE: db2abc               NODE : 000            DB   : abc
  APPHDL  : 0-39091              APPID: *
  AUTHID  : DB2abc               HOSTNAME: abc123
  EDUID   : 34716                EDUNAME: db2agent (abc) 0
  FUNCTION: DB2 UDB, database utilities, sqlubSetupJobControl, probe:2066
  MESSAGE : Starting an online db backup.
  
  

  2025-05-28-11.00.07.594522+000 I19934661E1319        LEVEL: Warning (OS)
  PID     : 3232                 TID : 139751686219264 PROC : db2vend (db2med - 34992 (abc)) 0
  INSTANCE: db2abc               NODE : 000
  HOSTNAME: abc123
  FUNCTION: DB2 UDB, SQO Memory Management, sqlocshr, probe:210
  MESSAGE : ZRC=0x850F00C4=-2062614332=SQLO_ADDR_CONFLICT
            "An address space conflict was detected attaching to shared memory."
  CALLED  : OS, -, shmat                            OSERR: EINVAL (22)
  DATA #1 : Memory set handle, PD_TYPE_OSS_MEM_SET_HDL, 48 bytes
  <snipped>
  
  

  2025-05-28-11.00.07.659807+000 I19935981E412         LEVEL: Event
  PID     : 3232                 TID : 139751686219264 PROC : db2vend (db2med - 34992 (abc)) 0
  INSTANCE: db2abc               NODE : 000
  HOSTNAME: abc123
  FUNCTION: DB2 UDB, oper system services, DB2VEND_main, probe:1060
  MESSAGE : Process must re-exec due to address space conflicts.
  DATA #1 : String, 29 bytes
  /db2/dbabc/sqllib/bin/db2vend

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

backup, performance, high SWAP, ASLR, OOM, address space conflict, db2vend , KBA , BC-DB-DB6 , DB2 Universal Database for Unix / NT , BC-DB-DB6-DBA , Database Administration , Problem