2593397 - Writer hang, lots of threads in Allocate, Deallocate, Reallocate - SAP IQ 

• Multiplex writer hangs.
• 3 DumpAllThreads files were taken during the hang time and all of them are identical.
• Lots of threads are stucked in Allocate, Deallocate, Reallocate functions of s_VersioningBlockmap, or in Lock function.

SAP IQ 16.0

CR812973 , CR#812973 , 812973, CR810303, CR#810303,810303, CR811570 , CR#811570, 811570, CR809642 , CR#809642, 809642, s_VersioningBlockmap::Allocate, s_VersioningBlockmap::Deallocate, s_VersioningBlockmap::Reallocate, hos_sharedvar::Lock(), hos_mutex::Lock(), st_txnMgr::BeginTransaction, Multiplex, MPX, lock, stacktrace, stktrc , stack trace , KBA , BC-SYB-IQ , Sybase IQ , Problem