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Exadata server crashes when running in a configuration with mixed RDS fragment size (e.g. mixing UEK2/UEK4) (Doc ID 2462366.1)

Last updated on FEBRUARY 26, 2019

Applies to:

Oracle Exadata Storage Server Software - Version 12.2.1.1.7 to 12.2.1.1.8 [Release 12.2]
Oracle Exadata Storage Server Software - Version 18.1.5.0.0 to 18.1.9.0.0 [Release 12.2]
Information in this document applies to any platform.

Symptoms

In an Exadata configuration that contains servers that use different RDS fragment size (i.e. some servers use 4k and some servers use 16K), a server using 16K fragment size running kernel 4.1.12-94.8.1 or higher may crash when an RDS re-connection to a server using 4K fragment size is attempted.  Note the following:

The combination of differing RDS fragment size can occur in the following scenarios:

The call stack from the crash of the server using 16K fragment size is similar to the following:

Cause

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In this Document
Symptoms
Cause
Solution
 Exadata Database Machine
 SuperCluster
References

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