2737615 - Dumps are hanging when 'enable dump history' is enabled - SAP ASE

• One or more dump database and/or dump transaction commands are sleeping and not finishing
• A dbcc stacktrace on the sleeping dump transaction command will look something like this

upsleepgeneric
dmpld_wait_lock_hist_file
dmpld_upd_dump_history_file
dmpx_truncatemain
dmpxact

• A dbcc stacktrace on a sleeping dump database command will look something like this

upsleepgeneric
dmpld_wait_lock_hist_file
dmpld__add_dump_record

• The stored procedure sp_dump_history is being executed to purge history and it is not completing
• A dbcc stacktrace on the sleeping sp_dump_history spid might look something like this

upsleepgeneric
fio__p_sema
ufopen
dmpld__read_and_expire_history
dmpld_purge_dump_hist

• Alternate dbcc stacktrace on the sleeping sp_dump_history spid might look something like this

upsleepgeneric
dmpld_wait_lock_hist_file
dmpld_save_dmphistfd
dmpld_write_dump_record
dmpld__read_and_expire_history
dmpld_purge_dump_hist

• A timeslice message is seen in the SAP ASE errorlog with the failure in the module write and a stacktrace similar to this

ufwrite
ufprintf
dmpld_write_dump_record
dmpld__read_and_expire_history
dmpld_purge_dump_hist

• In cases of the sleeping spids, a kill of the sleeping spid will not be responsive and a reboot is necessary to clear them.
• The configuration parameter "enable dump history" is enabled.

• SAP Adaptive Server Enterprise 16.0 (ASE)
• SAP Adaptive Server Enterprise 15.7 (ASE)

CR817868, CR#817868, 817868, dumphist, purge_dump_history, deadlock , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed