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2394147 - Lots DDL commands causing increasing catalog cache size and can result in problem "no free pages available in cache" -- SAP IQ

Symptom

  • Symtoms
      - IQ coodinator crash, due to  "Fatal error: no free pages available in cache"
      - Srvlog message : "...Cache size adjusted to nnnnnK"

  •  Description    

    After Coordi-server was brought up, days later IQ server became crash due to "Fatal error: no free pages available in cache".
    It happened when catalog cache size exceeded -ch limit. (Related KBAs are 1884847 & 2010719).
    DBA has increased -cl & -ch values to avoid the problem, but due to continuous lots  DDL ceations ,  catalog cache size has been also increased too.   
    Customer has specific usage that there are lots if DDL ( drop & creation ) daily. Due to continuous DDL operations, 
    catalog DB(*.db) file has been growing from 1.7 GB and now more than 4 GB.  Also -cl & -ch values need to be set to 8GB & 12GB.

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Environment

  • SAP IQ15.4
  • SAP IQ16

Product

SAP IQ 16.0

Keywords

"Cache size adjusted" ; "no free pages available in cache" ; MainHeapPages ;  CurrentCacheSize ; , KBA , BC-SYB-IQ , Sybase IQ , Problem

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