Environment is Db2 for AIX, Version 7 FP5

The following entries appear in the db2diag.log .... Then the instance has to be restarted to work on it again .... Any pointers ...

Thanks ...

2002-08-30-11.12.22.908379 Instance:xxxx Node:000
PID:60240(db2agent (instance)) Appid:none
access_plan_manager sqlra_load_dyn_stmt Probe:40
DIA9999E An internal error occurred. Report the following error code : "
2".

2002-08-30-11.14.42.524434 Instance:xxxx Node:000
PID:60240(db2agent (instance)) Appid:none
access_plan_manager sqlra_load_dyn_stmt Probe:40
DIA9999E An internal error occurred. Report the following error code : "
2".