Oracle Exadata Storage Server Software
 
Sun Datacenter InfiniBand Switch 36
 
Oracle SuperCluster Specific Software
 

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

In this Document

Description

Occurrence

Symptoms

Workaround

Patches

History

References

Applies to:

Description

Due to <bug 23528420>, InfiniBand switches may experience high CPU utilization.

Occurrence

InfiniBand switches may experience high CPU utilization after receiving a malformed POST request via HTTP or HTTPS. Such requests are often initiated by a security scan tool.  Note that Oracle Enterprise Manager does not issue these type of requests.

See <Document 2146310.1> for additional details.

Symptoms

Possible symptoms include the following:

• Subnet manager unable to get CPU to respond to network management duties.
• Database server or storage server eviction, especially for versions < 2.1.6 due to <bug 17482244>.  
• High CPU utilization (0% idle time) on the switch.
• Slow ssh or web login to the switch.
• Slow running diagnostic commands on the switch.

Note that a switch may experience high CPU utilization caused by this issue for an extended period of time and remain functional and stable.  While the switch is affected, if a subsequent action that requires CPU were to occur, such as a patchmgr ibswitch upgrade prerequisite check, it may lead to the symptoms described above, including database server or storage server eviction.

See <Document 2146310.1> for additional details.

Workaround

See <Document 2146310.1> for additional details. 

Patches

Fixed in version 2.2.2 and higher.  See <Document 2146310.1> for additional details. 

History

13-Feb-2017 - Add fixed version.  Reference bug 17482244.
11-Aug-2016 - published

References

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