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PLA-Support>Eng Systems>Exadata/ODA/SSC>Oracle Exadata>DB: Exadata_EST
 

Applies to:

Symptoms

A user may notice that the ILOM of an Exadata's Storage Cells and DB Nodes will be reset occasionally.

When this happens the following entry in the system event list may be seen-

When the ILOM is reset you will notice that the network switch connected to the network management port will report a "Link Down" for the port while the reset is in progress.

Also of note is that the OS will log the disconnecting of the ILOM's virtual usb devices CD-ROM/floppy/etc.

Cause

Starting with Exadata release 11.2.3.3.0 each server has it's own periodic reset time which will perform a reset of the ILOM every 90 days.

In addition to these scheduled resets the MS process can also reset ILOM prior to the periodic target reset time if it times out when accessing the ILOM.

When this reset is initiated by the Exadata software the following entry will be seen in the ms-odl.log file

 This change is documented in the what's new section of the Exadata overview document:  http://docs.oracle.com/cd/E50790_01/doc/doc.121/e51953/app_whatsnew.htm#BGGDGCIE

Solution

 This behavior is normal and expected. The Exadata system is configured so that a Server's ILOM is reset every 90 days.

References

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