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2512201 - Error 834 is raised leading to zombie process - SAP ASE

Symptom

  • During normal processing - Received three errors:

Error: 834, Severity: 20, State: 3
Illegal attempt to clean buffer: BUF=0x0000015a3314ab98, MASS=0x0000015a3314ab98, Buf#=0, page=0x0000015b2fd86800, dbid=69, Mass vdevno=251, vpage=177976, Buf lpage=177976, Mass stat=0x4211401, Buf stat=0x2, size=2048, cid=4 ('IMtempdb'), Pinned xdes=0x0000000000000000, spid=0.

  • One of the errors also had a stack including:

    SQL Text: INSERT INTO #output ...
    ...
    bufunkeep_cache
    bufdbtlastlog
    log__newpage
    plc__flush
    log__change
    logchange
    ncinsert
    ins_insert
    insert_all
    LeRetnCode LeInsertOp::_LeOpNext
    LeRetnCode LeOperator::LeOpNext
    LeRetnCode LeEmitNoSndOp::_LeOpNext
    LeRetnCode LeOperator::LeOpNext
    LePlanNext

Note: Complete stacktrace is in Attachments section 'stacktrace.txt'

  • All of the errors are on the in-memory database, 'IMtempdb'

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Environment

SAP Adaptive Server Enterprise (ASE) 15.7 SP132

Product

SAP Adaptive Server Enterprise 15.7

Keywords

fault, segfault, kisignal, stacktrace, registers, cache, buffer, pgysical disk pages, memory , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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