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DB2 - Problem description

Problem IT36285 Status: Closed

INSTANCE TRAPPED DURING SNAPSHOT MONITORING IN FUNCTION SQLPGETDBMONLOG()

product:
DB2 FOR LUW / DB2FORLUW / B50 - DB2
Problem description:
When taking database snapshot, there is a small timing condition
that can cause the instance to trap.  A sample stack dump of the
trap is shown below:

sqlpGetDbMonLog(sqeLocalDatabase*, sql_static_data*,
SQLP_DBMON_LOG_INFO*)
sqlmindb(sqm_agent_entity*, sqeLocalDatabase*, char const*,
unsigned int, sqlm_dbase*, sqm_snapshot_buffer*,
sqlm_bp_int_info const&, unsigned long, unsigned long, unsigned
long, sqlm_header_info*)
sqm_snap_dbase(sqm_agent_entity*, sqlo_gmt const&,
sqeLocalDatabase*, char const*, unsigned int,
sqm_snapshot_buffer*, sqlm_dbase**, sqlm_header_info*)
sqlmonssagnt(unsigned int, sqm_entity_id, sqlmai*, unsigned int,
void*, sqlm_collected*, unsigned short, unsigned short, sqlca*)
sqlmPdbRequestRouter(sqeAgent*)
sqleSubRequestRouter(sqeAgent*, unsigned int*, unsigned long*)
sqleProcessSubRequest(sqeAgent*)
sqeAgent::RunEDU()
sqzEDUObj::EDUDriver()
sqlzRunEDU(char*, unsigned int)
sqloEDUEntry
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* AIX/LINUX                                                    *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to DB2 v11.5.4.0                                     *
****************************************************************
Local Fix:


Solution




Workaround


****************************************************************
* USERS AFFECTED:                                              *
* AIX/LINUX                                                    *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to DB2 v11.5.4.0                                     *
****************************************************************


Comment


We need to cache some variables here and use cached values
throughout function to avoid anything changing underneath us.


Timestamps


Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :

19.03.2021
19.03.2021
19.03.2021


Problem solved at the following versions (IBM BugInfos)




Problem solved according to the fixlist(s) of the following version(s)