APAR status
Closed as program error.
Error description
LOAD REPLACE can encounter DEADLOCKS since the upgrade from 10.5 to 11.1. This is induced on column organized tables (BLU) processing and does not impact row organized tables. Event monitoring would show the LOAD job having "Lock Type: CATALOG" while attempting to acquire a ROW lock usually held by applications on SYSIBM.SYSTABLES during prepare phase of the statement. This can be confirmed by setting up lock event monitor and using db2evmonfmt to format the deadlock events capture. Per example: ------------------------------------------------------- Event ID : 73 Event Type : DEADLOCK Event Timestamp : 2018-12-17-12.47.01.228055 Partition of detection : 0 ------------------------------------------------------- Deadlock Graph -------------- Total number of deadlock participants : 2 Participant that was rolled back : 1 Type of deadlock : local Participant Participant Deadlock Member Application Handle Requesting Lock Holding Lock --------------- --------------- --------------- ------------------ 1 2 0 028475 2 1 0 028312 Participant No 2 requesting lock ---------------------------------- Lock Name : 0x000100000A0003129248D380C3 Lock wait start time : 2018-12-17-12.46.39.976047 Lock wait end time : 2018-12-17-12.47.01.228055 Lock Type : CATALOG Lock Specifics : loadingID:00000000,loadingBytes:0A000312 9248D380 Lock Attributes : 00000000 Lock mode requested : Exclusive Lock mode held : Exclusive Lock Count : 0 Lock Hold Count : 0 Lock rrIID : 0 Lock Status : Waiting Lock release flags : 00000000 Tablespace TID : Tablespace Name : Table FID : Table Schema : Table Name : Participant No 1 requesting lock ---------------------------------- Lock Name : 0x00000098000000000045000552 Lock wait start time : 2018-12-17-12.46.34.623845 Lock wait end time : 2018-12-17-12.47.01.228055 Lock Type : ROW Lock Specifics : ROWID=5,DATA_PARTITION_ID=0,PAGEID=69 Lock Attributes : 00000000 Lock mode requested : Share (CS/RS) Lock mode held : Exclusive Lock Count : 0 Lock Hold Count : 0 Lock rrIID : 0 Lock Status : Waiting Lock release flags : 00000000 Tablespace TID : 0 Tablespace Name : SYSCATSPACE Table FID : 152 Table Schema : SYSIBM Table Name : SYSTABLES Attributes Requester Requester --------------------- ------------------------------ ------------------------------ Participant No 2 1 Application Handle 028312 028475 Application ID *LOCAL.db2inst1.181218023046 xxx.xx.x.xx.xxxxx.181217174634 Application Name db2bp db2bp Authentication ID USER1 USER2 Requesting AgentID 72042 186381 Coordinating AgentID 72042 186381 Agent Status Data Fast Load Compiling Application Action Performing Load No action Lock timeout value 7200 7200 Lock wait value 0 0 Workload ID 1 1 Workload Name SYSDEFAULTUSERWORKLOAD SYSDEFAULTUSERWORKLOAD Service subclass ID 13 13 Service superclass SYSDEFAULTUSERCLASS SYSDEFAULTUSERCLASS Service subclass SYSDEFAULTSUBCLASS SYSDEFAULTSUBCLASS Current Request Fetch Prepare TEntry state 2 1 TEntry flags1 00020020 00000000 TEntry flags2 00000208 00000200 Lock escalation no no Client userid xxxxx, xxxx Client wrkstnname xxx.xx.x.xxx Client applname CLP /dbawork/xxxxx/xxxx/TEMP//content/package[@name= xx - Log Client acctng xxxxxxxx Utility ID
Local fix
To circumvent the issue, increase CATALOGCACHE_SZ
Problem summary
**************************************************************** * USERS AFFECTED: * * All using LOAD * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Db2 version 11.1 m4 fp6 * ****************************************************************
Problem conclusion
First fixed in Db2 version 11.1 m4 fp6
Temporary fix
Comments
APAR Information
APAR number
IT28601
Reported component name
DB2 FOR LUW
Reported component ID
DB2FORLUW
Reported release
B10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-03-27
Closed date
2021-03-15
Last modified date
2021-03-15
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
DB2 FOR LUW
Fixed component ID
DB2FORLUW
Applicable component levels
[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1"}]
Document Information
Modified date:
16 March 2021