3715561 - SAP IQ server becomes unresponsive with stacktrace during running IQ backup jobs

• IQ hang issue occurs intermittently during running IQ backup jobs.
• SAP IQ server requires hard shutdown and reboot.
• Stacktraces are generated during the issue but are corrupted and insufficient for identifying the exact function or root cause.

pcstkwalk
ucstkgentrace
<unknown>
<unknown>
hos_pi_pread
hos_svbio::Read2
hos_mvbio::Read2
hos_mvbio::Read
db_IQbackup::ReadBlocks
db_backup_workiterator::LocalExecWork
db_backup_workiterator::ExecWork
workAllocator::DoWork
hos_thread::Main
hos_lwtask::Start
IQWorkerStarter
run_task_body+1e
UnixTask::pre_body
<unknown>
<unknown>
...
pcstkwalk
ucstkgentrace
<unknown>
hos_crc32
db_IQbackup::ReadBlocks
db_backup_workiterator::LocalExecWork
db_backup_workiterator::ExecWork
workAllocator::DoWork
hos_thread::Main
hos_lwtask::Start
IQWorkerStarter
run_task_body+1e
UnixTask::pre_body
<unknown>
<unknown>

or

...
pcstkwalk
ucstkgentrace
<unknown>
<unknown>
hos_condvar::Wait
db_backup_workiterator::LocalExecWork
db_backup_workiterator::ExecWork
workAllocator::DoWork
hos_thread::Main
hos_lwtask::Start
IQWorkerStarter
run_task_body+1e
UnixTask::pre_body
<unknown>
<unknown>
...
pcstkwalk
ucstkgentrace
<unknown>
<unknown>
hos_condvar::Wait
db_backup_workiterator::LocalExecWork
db_backup_workiterator::ExecWork
workAllocator::DoWork
hos_thread::Main
hos_lwtask::Start
IQWorkerStarter
run_task_body+1e
UnixTask::pre_body
<unknown>
<unknown>

• RHEL 7.9
• SAP IQ 16.1 SP05.07
• SAP IQ 16.1 SP05.12

incremental backup, database server hang, stack trace issues, SAP IQ 16.1, SP05.PL07, SP05.PL12, hanging issue, crashing issue, hard shutdown, reboot, backup failure, corrupted stack trace, root cause investigation, full core dump, IQ_UNLIMIT_CORE , KBA , BC-SYB-IQ , Sybase IQ , BW-SYS-DB-IQ , BW on HANA with Sybase IQ Near-line Storage , Problem