Battery Replacement Warnings Coming Too Often On Exadata V2 Storage Cell (Doc ID 1473252.1)

Last updated on JULY 06, 2012

Applies to:

Oracle Exadata Storage Server Software - Version 11.1.0.3.0 to 11.2.2.3.0 [Release 11.1 to 11.2]
Oracle Exadata Hardware - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Battery on cell node is going into learn cycle too frequently. Learn cycle is supposed to kick off only at 1am on the 17th of every 3rd month (Jan/April/July/Oct). This is the alert that we keep getting.

"All Logical drives are in WriteThrough caching mode. Either battery is in a learn cycle or it  needs to be replaced. Please contact Oracle Support"


For example:


CellCLI> list alerthistory
        108     2012-04-17T02:01:22+02:00       info            "BBU on disk contoller at adapter 0 is going into a learn cycle. All Logical Volumes on harddis ks will go into WriteThrough caching mode. Write Throughput will be lower."
        109_1   2012-04-17T04:23:02+02:00       critical        "All Logical drives are in WriteThrough caching mode. Either battery is in a learn cycle or it needs to be replaced. Please contact Oracle Support"
        109_2   2012-04-17T05:46:23+02:00       clear           "Battery is back to a good state"
        110_1   2012-04-18T00:56:27+02:00       critical        "All Logical drives are in WriteThrough caching mode. Either battery is in a learn cycle or it  needs to be replaced. Please contact Oracle Support"
        110_2   2012-04-19T19:08:35+02:00       clear           "Battery is back to a good state"
        111_1   2012-04-20T14:23:39+02:00       critical        "All Logical drives are in WriteThrough caching mode. Either battery is in a learn cycle or it  needs to be replaced. Please contact Oracle Support"
        111_2   2012-04-22T08:35:30+02:00       clear           "Battery is back to a good state"
        112_1   2012-04-23T04:04:06+02:00       critical        "All Logical drives are in WriteThrough caching mode. Either battery is in a learn cycle or it needs to be replaced. Please contact Oracle Support"

Cause

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