|
Problem IC69166
|
Status: Closed |
When using Infinite Logging, the only copy of an active log file can be pruned |
| product: |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 |
| Problem description: |
db2 prune history and delete deletes first active log.
db2start
db2 -v " drop db INFLOG"
db2 -v "create db INFLOG"
db2 -v " connect to INFLOG"
db2 -v " update db cfg for INFLOG using LOGARCHMETH1
DISK:/home/db2inst1/ARCHLOC"
db2 -v "terminate"
db2 -v "backup db INFLOG to /dev/null"
db2 -v " update db cfg for INFLOG using SOFTMAX 1"
db2 -v " update db cfg for INFLOG using LOGPRIMARY 2 LOGSECOND
-1 LOGFILSIZE 4"
db2 get db cfg for INFLOG |grep -i LOG
db2 -v "terminate"
db2 -v "connect to INFLOG"
db2 -v "create table test1 (I int, v1 varchar(200), v2
varchar(200), v3 varchar(200))"
db2 connect to INFLOG; db2 +c delete from test1 where i = 2; cd
; db2 get db cfg for INFLOG |grep -i FIRST; loop_insert3.pl
Where loop_insert3.pl is a perl script that loads data into a
table called test1 and causes log files to get generated and
wait till they get deleted from the active log path and are only
existing in the archive log path (prove with ls)
ls /home/db2inst1/db2inst1/NODE0000/SQL00001/SQLOGDIR/
and
ls /home/db2inst1/ARCHLOC/db2inst1/INFLOG/NODE0000/C0000000
Then from different window
db2 connect to INFLOG; db2 prune history 20101007 with force
option and delete
then do the ls to confirm the missing files that are active logs
and now no longer exist anywhere
ls /home/db2inst1/db2inst1/NODE0000/SQL00001/SQLOGDIR/
and
ls /home/db2inst1/ARCHLOC/db2inst1/INFLOG/NODE0000/C0000000
In cases where infinite logging is used, the active log can be
archived to the archive path and removed from the active log
path.
If a prune is chosen with the delete option and a timestamp more
recent than the active log is chosen, the active log would be
deleted making it impossible to rollback the transaction and
causing a potential database corruption. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* db2 prune history and delete deletes first active *
* log.db2startdb2 -v " drop db INFLOG"db2 -v "create db *
* INFLOG"db2 -v " connect to INFLOG"db2 -v " update db cfg *
* for INFLOG using LOGARCHMETH1DISK:/home/db2inst1/ARCHLOC"db2 *
* -v "terminate"db2 -v "backup db INFLOG to /dev/null"db2 -v " *
* update db cfg for INFLOG using SOFTMAX 1"db2 -v " update db *
* cfg for INFLOG using LOGPRIMARY 2LOGSECOND-1 LOGFILSIZE *
* 4"db2 get db cfg for INFLOG |grep -i LOGdb2 -v *
* "terminate"db2 -v "connect to INFLOG"db2 -v "create table *
* test1 (I int, v1 varchar(200), v2varchar(200), v3 *
* varchar(200))"db2 connect to INFLOG; db2 +c delete from *
* test1 where i = 2;cd; db2 get db cfg for INFLOG |grep -i *
* FIRST; loop_insert3.plWhere loop_insert3.pl is a perl *
* script that loads data intoatable called test1 and causes *
* log files to get generated andwait till they get deleted *
* from the active log path and areonlyexisting in the archive *
* log path (prove with ls)ls *
* /home/db2inst1/db2inst1/NODE0000/SQL00001/SQLOGDIR/andls *
* /home/db2inst1/ARCHLOC/db2inst1/INFLOG/NODE0000/C0000000Then *
* from different windowdb2 connect to INFLOG; db2 prune *
* history 20101007 with forceoption and deletethen do the ls *
* to confirm the missing files that are activelogsand now no *
* longer exist anywherels *
* /home/db2inst1/db2inst1/NODE0000/SQL00001/SQLOGDIR/andls *
* /home/db2inst1/ARCHLOC/db2inst1/INFLOG/NODE0000/C0000000In *
* cases where infinite logging is used, the active log *
* canbearchived to the archive path and removed from the *
* active logpath.If a prune is chosen with the delete option *
* and a timestampmorerecent than the active log is chosen, the *
* active log wouldbedeleted making it impossible to rollback *
* the transaction andcausing a potential database corruption. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 UDB version 9.5 fix pack 7. *
**************************************************************** |
| Local Fix: |
|
| available fix packs: |
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Problem was first fixed in DB2 UDB Version 9.5 Fix Pack 7 |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC71752 IC71753
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 11.06.2010
15.11.2010
15.11.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.5.FP7
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.1.0.7
|
 |
| 9.5.0.7
|
|
