3137985 - IBM i - The requested heap space operation is invalid

Errors in OS joblog. Symptoms include SAP work processes hanging and possible performance issues.

MCH6902 
 To module . . . . . . . . . : QC2ALLOC
 To procedure . . . . . . . : do_free_default__FPv
 Statement . . . . . . . . . : 2
 Message . . . . : The requested heap space operation is invalid.
 Cause . . . . . : The requested heap space operation is invalid. The heap
 space identifier is 0. The activation group mark is 1. The activation group
 mark will be zero if the heap space is not associated with an activation
 group. The error type is 2. The error type indicating why the heap space
 request is invalid is defined as follows: 0001-Attempt to destroy the
 default heap space; 0002-Attempt to free or reallocate heap space storage
 that is not allocated; The heap space identifier and activation group mark
 may not be valid for this error type; 0003-Access to the heap space is not
 allowed; 0004-Attempt to mark a heap space that cannot be marked;
 
C2M1212 
 From module . . . . . . . . : QC2ALLOC
 From procedure . . . . . . : send_message__FiPvUi
 Statement . . . . . . . . . : 54
 To module . . . . . . . . . : QTOCLNETIF
 To procedure . . . . . . . : QtocLstNetIfc
 Statement . . . . . . . . . : 223
 Message . . . . : The pointer parameter passed to free or realloc is not
 valid.
 Cause . . . . . : The pointer parameter passed to free or realloc was not
 valid. This caused the function call to fail.

SAP on IBM i

KBA , BC-OP-AS4 , IBM AS/400 , BC-DB-DB4 , DB2 for AS/400 , Problem