DB2 will attempt to utilize the recovery history file to
determine the starting point of the log file scan for db2readlog
api to improve start up time and avoid log retrievals.
Depending on the starting point, and where transaction logs are
in the active log files, this may cause db2 to retrieve an
archived log file even when starting point is in active logs.
If the archive log files are not present, this will lead to a
missing log error such as the following db2diag.log message.
The requested LSN "0000000014A42F6D" is newer than StartLSN
"0000000014A3DC9C" of the current active log file
"S0000448.LOG".
* db2diag.log
2016-04-07-11.05.47.360323+540 E37325A987 LEVEL: Error
PID : 10551366 TID : 4993 PROC :
db2sysc
INSTANCE: db2inst1 NODE : 000 DB :
DNBAME
APPHDL : 0-20593 APPID:
*LOCAL.db2inst1.160407020537
AUTHID : AUTHNAME HOSTNAME: HOSTNAME
EDUID : 4993 EDUNAME: db2shred (DBNAME)
FUNCTION: DB2 UDB, recovery manager, sqlpshrFindExtentForLfsLsn,
probe:750
MESSAGE : ZRC=0x86100026=-2045771738=SQLPR_MISSING_LOG_EXT
"Used by various operations reading the logs to
indicate a missing log extent."
DATA #1 : String, 200 bytes
Could not find an extent with starting LFS/LSN value prior to
the given LFS/LSN.
Check if previous logs are missing, starting from
missingExtentNum.
startSearchExtent / missingExtentNum / searchLfsLsn
DATA #2 : unsigned integer, 4 bytes
447
DATA #3 : unsigned integer, 4 bytes
447
DATA #4 : LFS/LSN, PD_TYPE_SQLP_LFS_LSN_PAIR, 16 bytes
10249486/0000000014A42F6D
2016-04-07-11.05.47.393345+540 E44747A540 LEVEL: Error
PID : 10551366 TID : 5398 PROC :
db2sysc
INSTANCE: db2inst1 NODE : 000 DB :
DBNAME
APPHDL : 0-20593 APPID:
*LOCAL.db2inst1.160407020537
AUTHID : AUTHNAME HOSTNAME: HOSTNAME
EDUID : 5398 EDUNAME: db2agent (DBNAME)
FUNCTION: DB2 UDB, data protection services, sqlpgReadLogAPI,
probe:1
DATA #1 : String, 12 bytes
S0000447.LOG
DATA #2 : String, 1 bytes
0
DATA #3 : String, 1 bytes
0
2016-04-07-11.05.50.461040+540 I48099A492 LEVEL:
Warning
PID : 10551366 TID : 14007 PROC :
db2sysc
INSTANCE: db2inst1 NODE : 000 DB :
DBNAME
HOSTNAME: HOSTNAME
EDUID : 14007 EDUNAME: db2lfr.0 (DBNAME)
FUNCTION: DB2 UDB, recovery manager, sqlplfrFMReadLog,
probe:5120
DATA #1 : <preformatted>
LFR Scan Num = 35
LFR Scan Caller's EDUID = 4993
Return code for LFR opening file S0000447.LOG was -2146434659
2016-04-07-11.05.53.564859+540 I74029A599 LEVEL:
Warning
PID : 10551366 TID : 5398 PROC :
db2sysc
INSTANCE: db2inst1 NODE : 000 DB :
DBNAME
APPHDL : 0-20593 APPID:
*LOCAL.db2inst1.160407020537
AUTHID : AUTHNAME HOSTNAME: HOSTNAME
EDUID : 5398 EDUNAME: db2agent (DBNAME)
FUNCTION: DB2 UDB, data protection services, sqlpgReadLogAPI,
probe:17350
MESSAGE : ZRC=0x86100026=-2045771738=SQLPR_MISSING_LOG_EXT
"Used by various operations reading the logs to
indicate a missing log extent."
2016-04-07-11.05.50.486670+540 E59478A540 LEVEL: Error
PID : 10551366 TID : 5398 PROC :
db2sysc
INSTANCE: db2inst1 NODE : 000 DB :
DBNAME
APPHDL : 0-20593 APPID:
*LOCAL.db2inst1.160407020537
AUTHID : AUTHNAME HOSTNAME: HOSTNAME
EDUID : 5398 EDUNAME: db2agent (DBNAME)
FUNCTION: DB2 UDB, data protection services, sqlpgReadLogAPI,
probe:1
DATA #1 : String, 12 bytes
S0000447.LOG
DATA #2 : String, 1 bytes
0
DATA #3 : String, 1 bytes
0
* "db2pd -logs -db DBNAME" output
Database Member 0 -- Database DBNAME -- Active -- Up 50 days
13:52:24 -- Date 2016-04-07-11.03.20.252777
Logs:
Current Log Number 448
Pages Written 707
Cur Commit Disk Log Reads 0
Cur Commit Total Log Reads 0
Method 1 Archive Status Success
Method 1 Next Log to Archive 448
Method 1 First Failure n/a
Method 2 Archive Status n/a
Method 2 Next Log to Archive n/a
Method 2 First Failure n/a
Log Chain ID 2
Current LSO 54821006472
Current LSN 0x0000000014A42EE1
Address StartLSN StartLSO State
Size Pages Filename
0x0A000300011DE970 0000000014A3DC9C 54818124001
0x00000000 30000 30000 S0000448.LOG
0x0A000300011DF2D0 0000000000000000 54940404001
0x00000000 30000 30000 S0000449.LOG
... |
