Upgrading db2 V9.5 - db2 V9.7 FP2 on AIX.

Instance migrated sucessfully and check migration also worked fine.

Once the instance has migrated, I started the instance and tried to run db2 upgrade db dbname, this command fails with error

SQL1042C An unexpected system error occurred. SQLSTATE=58004



This is what db2diag.log shows







2010-07-27-14.31.48.787144-240 I1022615A579 LEVEL: Error
PID : 671990 TID : 1801 PROC : db2sysc
INSTANCE: qacdmxs NODE : 000 DB : CDMQA
APPHDL : 0-64 APPID: *LOCAL.qacdmxs.100727183148
AUTHID : DB2UDB
EDUID : 1801 EDUNAME: db2agent (CDMQA)
FUNCTION: DB2 UDB, buffer pool services, sqlbMigratePoolOnDisk, probe:40
MESSAGE : ZRC=0x87020002=-2029912062=SQLB_BPSE "Debug logic error detected"
DIA8501C A buffer pool logic error has occurred.
DATA #1 : unsigned integer, 4 bytes
0

2010-07-27-14.31.48.790442-240 I1023195A699 LEVEL: Error
PID : 671990 TID : 1801 PROC : db2sysc
INSTANCE: qacdmxs NODE : 000 DB : CDMQA
APPHDL : 0-64 APPID: *LOCAL.qacdmxs.100727183148
AUTHID : DB2UDB
EDUID : 1801 EDUNAME: db2agent (CDMQA)
FUNCTION: DB2 UDB, buffer pool services, sqlbVerifyBacklevelPDEFOnDisk, probe:20
MESSAGE : ZRC=0x82020001=-2113798143=SQLB_NONSEVERE_PRGERR
"non-severe BPS programming error"
DIA8532C An internal processing error has occurred.
DATA #1 : Dumped object of size 262144 bytes at offset 4529424, 45 bytes
/udb_db2diag/qacdmxs/671990.1801.000.dump.bin

2010-07-27-14.31.48.791631-240 I1023895A699 LEVEL: Error
PID : 671990 TID : 1801 PROC : db2sysc
INSTANCE: qacdmxs NODE : 000 DB : CDMQA
APPHDL : 0-64 APPID: *LOCAL.qacdmxs.100727183148
AUTHID : DB2UDB
EDUID : 1801 EDUNAME: db2agent (CDMQA)
FUNCTION: DB2 UDB, buffer pool services, sqlbVerifyBacklevelPDEFOnDisk, probe:20
MESSAGE : ZRC=0x82020001=-2113798143=SQLB_NONSEVERE_PRGERR
"non-severe BPS programming error"
DIA8532C An internal processing error has occurred.
DATA #1 : Dumped object of size 262144 bytes at offset 4791688, 45 bytes
/udb_db2diag/qacdmxs/671990.1801.000.dump.bin

2010-07-27-14.31.48.792810-240 I1024595A825 LEVEL: Error
PID : 671990 TID : 1801 PROC : db2sysc
INSTANCE: qacdmxs NODE : 000 DB : CDMQA
APPHDL : 0-64 APPID: *LOCAL.qacdmxs.100727183148
AUTHID : DB2UDB

EDUID : 1801 EDUNAME: db2agent (CDMQA)
FUNCTION: DB2 UDB, buffer pool services, sqlbMigratePoolTableFiles, probe:130
MESSAGE : ZRC=0x86020019=-2046689255=SQLB_CSUM "Bad Page, Checksum Error"
DIA8426C A invalid page checksum was found for page "".
DATA #1 : unsigned integer, 2 bytes
4
DATA #2 : Dumped object of size 65536 bytes at offset 5053952, 45 bytes
/udb_db2diag/qacdmxs/671990.1801.000.dump.bin
DATA #3 : Dumped object of size 65536 bytes at offset 5119608, 45 bytes
/udb_db2diag/qacdmxs/671990.1801.000.dump.bin

2010-07-27-14.31.48.793695-240 I1025421A695 LEVEL: Error
PID : 671990 TID : 1801 PROC : db2sysc
INSTANCE: qacdmxs NODE : 000 DB : CDMQA
APPHDL : 0-64 APPID: *LOCAL.qacdmxs.100727183148
AUTHID : DB2UDB
EDUID : 1801 EDUNAME: db2agent (CDMQA)
FUNCTION: DB2 UDB, buffer pool services, sqlbMigratePoolTableFiles, probe:130
MESSAGE : ZRC=0x86020019=-2046689255=SQLB_CSUM "Bad Page, Checksum Error"
DIA8426C A invalid page checksum was found for page "".
DATA #1 : unsigned integer, 8 bytes
21474836736
DATA #2 : unsigned integer, 8 bytes
25769804032
DATA #3 : unsigned integer, 8 bytes
30064771328

2010-07-27-14.31.48.794009-240 I1026117A723 LEVEL: Error
PID : 671990 TID : 1801 PROC : db2sysc
INSTANCE: qacdmxs NODE : 000 DB : CDMQA
APPHDL : 0-64 APPID: *LOCAL.qacdmxs.100727183148
AUTHID : DB2UDB
EDUID : 1801 EDUNAME: db2agent (CDMQA)
FUNCTION: DB2 UDB, buffer pool services, sqlbMigrateFiles, probe:20
MESSAGE : ZRC=0x86020019=-2046689255=SQLB_CSUM "Bad Page, Checksum Error"
DIA8426C A invalid page checksum was found for page "".
DATA #1 : unsigned integer, 4 bytes
2



Any help on this situation will be greatly appreciated.