DB2 - Problem description
Problem IT30178 | Status: Closed |
POTENTIAL HANG WAITING ON TRANENTRY LATCH IN SQLPM_WRITE_APPL_LOCKS DURING LOCK SNAPSHOT | |
product: | |
DB2 FOR LUW / DB2FORLUW / B10 - DB2 | |
Problem description: | |
When a federated application starts up it will hold the tranEntry latch. Snapshot processing first gets the dblatch and then tries to get the tranEntry latch. It is possible for a hang to occur if a LOCK snapshot is processing when such a federated application is preparing to commit. New connections may hang waiting for the dblatch that the snapshot is holding. Stacks : Federated Application : semop sqloSSemP sqlccipcrecv sqlccrecv sqlerFedInvokeFencedRoutine sqlriFedInvokeInvoker sqlqg_Call_FMP_Thread sqlqgFedPrepare sqlqgFedPrepareInvoker_ sqlpxprp IPRA.$sqlr_f2pc sqlrrcom_dps sqlrrcom sqlrr_commit executeSection executeQuery run pvm_entry ? LatchInformation Holding Latch type: (SQLO_LT_SQLP_TENTRY__tranEntryLatch) Holding Latch type: (SQLO_LT_SQLE_FEDFMP_APP_CB__fmpAppLatch) Holding Latch type: (SQLO_LT_SQLP_SAVEPOINTS__spLatch) Holding Latch type: (SQLO_LT_SQLP_TENTRY__subTranChainLatch) Lock Snapshot sqloXlatchConflict sqlpm_write_locks_indoubt_tran IPRA.$sqm_snap_db_locks sqlmonssagnt sqlmonssbackend sqlesrvr sqleMappingFnServer sqlerKnownProcedure sqlerCallDL sqljs_ddm_excsqlstt ? LatchInformation Waiting on latch type: (SQLO_LT_SQLP_TENTRY__tranEntryLatch) Holding Latch type: (SQLO_LT_sqeLocalDatabase__dblatch) Holding Latch type: (SQLO_LT_SQLP_TENTRY__snapshotProcessingLatch) | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher * **************************************************************** | |
Local Fix: | |
Solution | |
Workaround | |
not known / see Local fix | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 04.09.2019 16.01.2020 16.01.2020 |
Problem solved at the following versions (IBM BugInfos) | |
Problem solved according to the fixlist(s) of the following version(s) |