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2731751 - Encountered 'Incorrect page header read' problem and became crash in SP11.21 -- SAP IQ

Symptom

After upgraded tp SP11.21, due to 'IPHR(Incorrect page header read)' problem, suddenly server got crash many times. 
Wen executed DBCC on one table, it reported various ( not-consistent ) error detection message, first run DBCC said all FP column had problem,
but next another DBCC reported some of FP columns had problem. There is no RLV table in this customer DB.

    *iqmsg =>
     
        .. main Bufman: Incorrect page header read; from slib/s_bufman.cxx:3212 into buffer 0x7f9338ff1dd8
        .. main Bufman: An error was detected on a database page. You may have a damaged index. For additional information, please check your IQ message file or run sp_iqcheckdb.
        -- (slib/s_blockmap.cxx 14743)
        ...
        .. main Bufman: Decompression error during Read; from slib/s_buf.cxx:1812 into buffer 0x7f9338ff1dd8
        ...

   * stack-1 :
 
       ===== Thread Number  140446770521856  (IQ connID: 0000137137) =====
        ...
        hos_ABORT
        SigHndlr+0x59
        _fini+0xe0ed3c4c
        s_blockmap_ondisk::AllocEntry
        s_blockmap::AllocateLogicalBlockId
        ...
        st_txncb::FlushCoalesce
        st_txncb::FlushForCommit
        ...
           
    * stack-2 :
     
         ===== Thread Number  140262718224128  (IQ connID: 0000012097) =====
         ...
         hos_ABORT
         Throw
         hos_assertexception::ThrowException
         st_txnMgrAbortHelper::st_txnMgrAbortHelperTerminator
         hos_ObjectStack::Throw
         Throw
         s_blockmap_ondisk::AllocEntry
         s_blockmap::AllocateLogicalBlockId
         ...
         st_txncb::Combine
         st_txnMgr::CombineTransactions
         st_txnMgr::DropVersions
         ...


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Environment

SAP IQ 16.0 SP11.x

Product

SAP IQ 16.0

Keywords

IPHR , s_blockmap ,"Incorrect Page Header Read" , st_txnMgrAbortHelperTerminator , s_bufman , "Decompression error during Read" , CR817604, 817604, , KBA , BC-SYB-IQ , Sybase IQ , Problem

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