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crash recovery

i have db2 udb v8.1 on windows 64 bit 2003 server, after db2 server
start , i found this in the db2diag.log, is this error?

2004-05-05-15.28.30.780000 Instance:DB2 Node:000
PID:1692(db2sys cs.exe) TID:2860 Appid:AC10040A. GD5F.00FC56D8BE C5
base sys utilities sqledint Probe:30

Crash Recovery is needed.

2004-05-05-15.28.31.890000 Instance:DB2 Node:000
PID:1692(db2sys cs.exe) TID:2860 Appid:AC10040A. GD5F.00FC56D8BE C5
recovery manager sqlpresr Probe:410 Database:NJIPD

Crash recovery started. LowtranLSN 00000006107760A D MinbuffLSN
000000060EAC1CA 4

2004-05-05-15.28.31.980001 Instance:DB2 Node:000
PID:1692(db2sys cs.exe) TID:2860 Appid:AC10040A. GD5F.00FC56D8BE C5
recovery manager sqlprecm Probe:125 Database:NJIPD

Using parallel recovery with 3 agents 5 QSets 35 queues and 4 chunks
2004-05-05-15.29.12.640000 Instance:DB2 Node:000
PID:1692(db2sys cs.exe) TID:2860 Appid:AC10040A. GD5F.00FC56D8BE C5
recovery manager sqlprecm Probe:400 Database:NJIPD

DIA2051W Forward phase of crash recovery has completed. Next LSN is
"000000061077B3 00".

2004-05-05-15.29.29.860000 Instance:DB2 Node:000
PID:1692(db2sys cs.exe) TID:2860 Appid:AC10040A. GD5F.00FC56D8BE C5
recovery manager sqlpresr Probe:1450 Database:NJIPD

There remains configuration changes to apply.

2004-05-05-15.29.30.240001 Instance:DB2 Node:000
PID:1692(db2sys cs.exe) TID:2860 Appid:AC10040A. GD5F.00FC56D8BE C5
recovery manager sqlpresr Probe:3170 Database:NJIPD

Crash recovery completed. Next LSN is 000000061111C00 C

2004-05-05-15.38.43.420000 Instance:DB2 Node:000
PID:4004(db2das stm.exe) TID:4092 Appid:none
Client Config cfgReadDbcDirec tory Probe:5

DB_CONFIG:

0x000006FBFCFC5 230 : 456E 7469 7265 2044 4243 4647 00 Entire
DBCFG.

PID:4004 TID:4092 Node:000 Title: Sqlcode
SQL -1024
2004-05-05-16.03.14.010000 Instance:DB2 Node:000
PID:3356(db2das stm.exe) TID:3440 Appid:none
Client Config cfgReadDbcDirec tory Probe:5

DB_CONFIG:

0x000006FBFCFC5 230 : 456E 7469 7265 2044 4243 4647 00 Entire
DBCFG.

PID:3356 TID:3440 Node:000 Title: Sqlcode
SQL -1024

why there is a crash recovery? what is LSN?
Nov 12 '05
10 9561
> > To be honest, I don't know for sure exactly what the db2dia.log means
when
it said crash recovery took place. It may have only refer to a situation
when DB2 is activated in an inconsistent state, and not when an application crashes and rolls back to the last commit point.

"Gert van der Kooij" <ge**@invalid.n l> wrote in message
It clearly described in the manuals. Check the control center
Concepts -> Administration -> Data recovery -> Crash recovery.

I looked in the DB2 Information Center (not Control Center) as you suggested
and it clearly includes that transaction failure and recovery (rolling back
updates that were not committed) are part of crash recovery (in addition to
re-starting a database in an inconsistent state).

But that does not necessarily mean that the db2dia.log logs transaction
failures and their rollbacks. It may only log crash recovery that happens
when the database is activated (as a result of a database or database
manager crash/forced shutdown). I simply don't know for certain.

But it is clear from the documentation that you referred to, that the
concept of crash recovery includes both database failures (where crash
recovery would take place when the database was re-activated) and
transaction failure (where un-committed transactions would be rolled back
immediately while DB2 was still running).
Nov 12 '05 #11

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