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Performance issue Exadata. best practises for kernel tuning

Turgunbek
Turgunbek Member Posts: 24
edited Nov 29, 2018 1:57AM in Exadata

Hi all,

One of customer have performance issue with Exadata machine.

Can you share tools to monitor and docs for kernel tuning

Thanks

Turgun

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Answers

  • Robin Chatterjee
    Robin Chatterjee Member Posts: 518 Silver Badge
    edited Nov 29, 2018 1:57AM

    H Turgun,

    Do you know the exachk score and if there are unresolved issues flagged in Exachk.

    Generally Exadata is pretty well tuned and kernel level tuning is not recommended.

    For performance problems if you have diagnostics and tuning pack then study the AWR reports. You may implement IORM and other resource management options to prioritise critical processes. In most cases with Exadata its a case of bad code running just fast enough to reach production that would not have been able to run at all in a conventional system. To isolate the bad performers go for AWR or if you don't have the requisite licenses then statspack.