Known Issues for In-Memory Row-Level Versioning

Descriptions of known issues for in-memory row-level versioning.

In-Memory Row-Level Versioning (RLV) Issues
CR# Description
737728
  • Server stops responding when async IO subsystem is enabled with RLV
  • Workaround – Disable the flusher thread by setting the RV_Disable_Logging_Flusher database option to ON. This could have a small impact on concurrent loads and inserts into the RLV store.

    If the problem persists, disable async IO by setting the Enable_Async_IO database option to OFF. This causes the real-time load and DML performance to be suboptimal, as these operations are dependent on IO subsystem performance.

    Note: Disabling the flusher thread or async IO options has no impact on the performance of any operations run against the IQ main store.
Related concepts
Known Issues for Installation and Configuration
Known Issues for SySAM Licensing
Known Issues for SAP Sybase IQ Operations
Known Issues for Interactive SQL
Known Issues for Multiplex Environment
Related reference
Restrictions