You observe that Netweaver AS work processes are in reconnect status and general connectivity to the DB2 database has been disrupted. The following error is reported in the db2diag.log for program 'db2gcf'.
2019-04-03-07.13.34.757882-240 E5902179E684 LEVEL: Error
PID : 64020 TID : 47571099091008 PROC : db2gcf
INSTANCE: db2db6 NODE : 000
FUNCTION: DB2 UDB, high avail services, sqlhaInternalDbmsAttach, probe:209
RETCODE : ZRC=0x850F00C4=-2062614332=SQLO_ADDR_CONFLICT
"An address space conflict was detected attaching to shared memory."
Program 'db2gcf' (DB2 Generic Control Facility) is the Control DB2 Instance command that resides in INSTHOME/sqllib/bin for Unix systems and sqllib\bin for Windows systems. It starts, stops, or monitors a DB2 instance, usually from an automated script, such as in an HA (high availability) cluster or TSA managed HADR environment.
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