2505110 - Using async i/o on tmpfs file system devices for Unix Platforms - SAP ASE | SAP Knowledge Base Article

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2505110 - Using async i/o on tmpfs file system devices for Unix Platforms - SAP ASE

Symptom

  • For ASE 15.x systems on Redhat 5 platform may report below messages when using tmpfs filesystem devices
    While initializing the devices the below messages were reported:
    00:00000:00001:2006/12/15 11:47:17.98 kernel  Virtual device
    '/dev/shm/tempdb.dat' does not support kernel asynchronous i/o. Synchronous i/o will be used for this device.

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Environment

  • SAP Adaptive Server Enterprise (ASE) 15.7 on Unix
  • SAP Adaptive Server Enterprise (ASE) 16.0 on Unix

Product

Sybase Adaptive Server Enterprise 15.0

Keywords

tmpfs, async I/O, synchronous I/O, asynchronous I/O, Redhat 5, Redhat 6.8 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-DB-SYB , SAP Business Suite on Sybase ASE Database Platform , BC-SYB-ASE-CE , ASE Cluster Edition (Standalone) , How To

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