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Oracle 12c RAC/ASM Instance will Crash if one Site is Down in an Stretch (Extended) Cluster. (Doc ID 2093559.1)

Last updated on JUNE 16, 2022

Applies to:

Linux OS - Version Oracle Linux 6.0 and later
Oracle Cloud Infrastructure - Version N/A and later
Private Cloud Appliance X5-2 Hardware - Version All Versions to All Versions [Release All Releases]
Linux x86-64

Symptoms

12c RAC/ASM is configured in multiple sites in an stretch (extended) cluster.

In this setup, database has ASM diskgroups having access to 2-pathed local disk device and 2-pathed remote disk device.

When the remote 2-paths are down, the I/Os (Input / Outputs) to the remote site are stuck and will not fail or complete by at least 2 minutes. At that tile, DB processes like LMON will be in D state (i.e. wait for I/O completions) as shown below:

Cause

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In this Document
Symptoms
Cause
Solution
References


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