This problem is known to occur during dropped table rollforward
recovery.
A typical call stack may show :
pdLog
sqloDiagnoseFreeBlockFailure(SMemFBlk*)
sqloDiagnoseFreeBlockFailure(SMemFBlk*)
sqlofmblkEx
sqlprecm(sqeAgent*,SQLP_LSN8*,SQLP_LSN8*,unsigned int,unsigned
long)
sqlprUndoPhaseTblSpace(sqeAgent*,SQLP_DBCB*,unsigned
int*,SQLB_POOL_ID_LIST*,bool*,bool*)
sqlpForwardRecoveryTblSpace(sqeAgent*,unsigned short,unsigned
int,char*,int*,int*,int*,unsigned int*,SQLB_POOL_ID_LIST*,int)
sqlpprfr(SQLP_PDB_RFW_SQP_RQST*,SQLP_RFW_RPLY*,sqeAgent*,SQLB_PO
OL_ID_LIST*,int*,sqlca*)
sqlpPdbRfwRouter(sqeAgent*)
sqleSubRequestRouter(sqeAgent*,unsigned int*,unsigned int*)
the db2diag.log would report the following 2 typical messages :
FUNCTION: DB2 UDB, data protection services,
sqlpALR_LoadUserBuffer,
probe:350
DATA #1 : <preformatted>
Buffer is too small. Update readStartLsn from 1D259B1C5D3F to
1D259B1C5D3F
and
FUNCTION: DB2 UDB, SQO Memory Management,
sqloDiagnoseFreeBlockFailure,
probe:30
DATA #1 : String, 12 bytes
Double free. |
