One of the Power Distribution Units (PDU) is non-responsive In Exalogic Rack & Exadata Database Machine (Doc ID 1475304.1)

Last updated on APRIL 25, 2017

Applies to:

Oracle Exadata Hardware - Version 11.1.0.6 and later
Oracle Exalogic Elastic Cloud Software - Version 1.0.0.0.0 and later
Oracle Exalogic Elastic Cloud X2-2 Hardware - Version X2 and later
Exalogic Elastic Cloud X3-2 Hardware - Version X3 to X3 [Release X3]
Exalogic Elastic Cloud X4-2 Hardware - Version X4 to X4 [Release X4]
Oracle Solaris on x86-64 (64-bit)
Linux x86-64

Symptoms

Each Exalogic/Exadata machine (eighth/quarter/half/full) rack has 2 Power Distribution Units (PDU) supplies in each component (InfiniBand Switch/Gateway, Compute Node and Storage head) actively balance power - if one fails, or is connected to a PDU that fails, the other takes over (2N redundancy, continuous availability). Exalogic Power Distribution Units in each Exalogic rack configuration is redundant. For complete redundancy, each PDU should be wired to a different AC source.

One of the Power Distribution Units (PDU) seems to be non-responsive on Exalogic Rack Machine. The firmware version of Exalogic machine PDU is 1.0.4. Following symptoms were observers during the issue.

The issue was not affecting power supply to Exalogic Rack Machines, but merely affecting the ability to monitor current draw through the PDU.

Cause

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