SAP Knowledge Base Article - Preview

2478791 - SAP IQ How do server startup switches -gc and -gr affect auto checkpointing

Symptom

  • How does the IQ server calculate when to do a checkpoint ?

  • How do the -gc and -gr startup switches affect auto checkpointing in IQ ?

  • Why does the -gr setting not appear to be forcing a checkpoint ?

  • Why is checkpointing occurring more frequently then what the checkpoint time or recovery time have been set to ?

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Environment

  • All SAP IQ versions on all platforms

Product

SAP IQ 16.0 ; SAP IQ 16.1 ; SAP Sybase IQ 15.2 ; SAP Sybase IQ 15.4

Keywords

check point, chkpnt, sybase, effect, IQ 15.4, IQ 16, IQ16, IQ154, IQ 16.1, formula, frequency, frequent  , KBA , BC-SYB-IQ , Sybase IQ , How To

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