In a Db2 pureScale environment, a Db2 member may encounter a
FODC_Panic condition due to a corrupted latch within the
db2CFConnPoolMgr EDU. If this issue is encountered the following
db2diag.log messages should be observed on the member:
2020-04-16-17.12.43.797374+120 E2048029A2278 LEVEL:
Severe (OS)
PID : 26804624 TID : 14680 PROC :
db2sysc 0
INSTANCE: db2inst1 NODE : 000
HOSTNAME:
EDUID : 14680 EDUNAME: db2CFConnPoolMgr 0
FUNCTION: DB2 UDB, SQO Latch Tracing,
SQLO_SLATCH_CAS64::getConflictComplex, probe:210
MESSAGE :
ZRC=0x870F0114=-2029059820=SQLO_LATCH_ERROR_UNUSED_BITS_ARE_SET
"latch likely corrupted. Reserved bits are
unexpectedly non-zero."
CALLED : OS, -, unspecified_system_function
DATA #1 : String, 13 bytes
invalid latch
DATA #2 : File name, 16 bytes
sqloLatchCAS64.C
DATA #3 : Source file line number, 8 bytes
591
DATA #4 : Codepath, 8 bytes
0
DATA #5 : String, 137 bytes
0xCCCCCCCCCCCCCCCC: {
held X: 0
reserved for X: 0
shared holders: 52428
firstSharIndex: 0xCCCCC
firstExclIndex: 0x66666
}
DATA #6 : LatchMode, PD_TYPE_LATCH_MODE, 8 bytes
0x1 (SQLO_LATCH_MODE_SHARED)
DATA #7 : String, 402 bytes
{
state = 0xCCCCCCCCCCCCCCCC
= {
held X: 0
reserved for X: 0
shared holders: 52428
firstSharIndex: 0xCCCCC
firstExclIndex: 0x66666
}
starve X mode = false
xWaitCount = 52428
requestCount = 0
identity = unknown (3276)
}
DATA #8 : Pointer, 8 bytes
0x078000000c162508
DATA #9 : Hexdump, 16 bytes
0x078000000C162508 : CCCC CCCC CCCC CCCC CCCC CCCC CCCC CCCC
................
CALLSTCK: (Static functions may not be resolved correctly, as
they are resolved to the nearest symbol)
[0] 0x0900000012015678
dumpDiagInfoAndPanic__17SQLO_SLATCH_CAS64CFCPCcCUiCUlT3ClT3CiT1T
3T7 + 0x2F8
[1] 0x0900000012015EA0
getConflictComplex__17SQLO_SLATCH_CAS64FCUl + 0x1A0
[2] 0x0900000012016AE4 getConflict__17SQLO_SLATCH_CAS64FCUl +
0x84
[3] 0x09000000129B3118
sqleSingleCaReadLinkResources__21SQLE_SINGLE_CA_HANDLEFCP30SQLHA
_CF_MEMBER_LINK_RESOURCESCb + 0x5B8
[4] 0x09000000129C085C SAL_DoAdapterHousekeeping + 0xF1C
[5] 0x0900000019B11260 sqleCFConnPoolMgrEntry__FPUcUi + 0x2E0
[6] 0x09000000120D3200 sqloEDUEntry + 0x360
[7] 0x09000000005ABFE8 _pthread_body + 0xE8
[8] 0xFFFFFFFFFFFFFFFC ?unknown + 0xFFFFFFFF
2020-04-16-17.12.43.834249+120 E2050308A690 LEVEL: Error
PID : 26804624 TID : 14680 PROC :
db2sysc 0
INSTANCE: db2inst1 NODE : 000
HOSTNAME:
EDUID : 14680 EDUNAME: db2CFConnPoolMgr 0
FUNCTION: DB2 UDB, base sys utilities, sqle_panic, probe:30
MESSAGE : ADM14005E The following error occurred: "Panic".
First Occurrence
Data Capture (FODC) has been invoked in the following
mode:
"Automatic". Diagnostic information has been recorded
in the
directory named
"/db2home/db2inst1/sqllib/db2dump/DIAG0000/FODC_Panic_2020-04-16
-17.12.
43.823476_26804624_14680_000/". |
