If you are using the GUI tools on an AIX operating system, you may receive an SQL1224N error. This error is caused by a memory handling problem in DB2. The following workaround will help eliminate the error:
Procedure
To stop the SQL1224N error on AIX operating systems:
export EXTSHM=ON db2set DB2ENVLIST=EXTSHM
db2stop db2start
Once the instance restarts with the new environment variable settings, the SQL1224N errors should stop.