Symptom
- A process accessing the monLocks monitoring table.
- Fails on Unix with "infected with signal 11" or "system exception (0xc0000005)" on Windows in the module mda__traverse_lock_bucket() followed by a stack trace:
Current process (0xe1002a) infected with signal 11 (SIGSEGV)
Address 0x00000000806dc204 (mda__traverse_lock_bucket+0x178)
or
Adaptive Server Enterprise system exception (0xc0000005) generated by a storage access violation.
kernel pc: 0x00000000016DB1D5 mda__traverse_lock_bucket+ 0x1b5
- The stack trace includes modules:
mda__traverse_lock_hashtable
mda__read_lock_table
mda_populate_monLocks
mda_exec
- Sometimes ASE will crash as result when the affetced spid is holding a spinlock :
Spinlock fglockspins (or tablockspins) at address ....
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Environment
SAP Adaptive Server Enterprise (ASE) 15.7 and 16.0
Product
Keywords
UBFALLOC, MDA, segmentation, fault, segfault, access, violation, stacktrace , exception, CR796916.CR# 796916. 796916, CR782871, CR#782871, 782871 , _$o1cfaoL0.mda__traverse_lock_bucket , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed
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