Discovery phase fails due to VGs in exported state and SCO backups fail

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Last Updated:

Applies to

SnapCenter Server
SnapCenter Plug-in for Oracle
Oracle Databases on Linux hosts using LVM

Issue

Oracle database backup jobs in SnapCenter fail during the discovery phase with
the following error in job logs:
PL-SCU-00015: Unable to complete the Discover operation Internal error
java.nio.file.NoSuchFileException:
/var/opt/snapcenter/scu/json/DiscoverOutput__0.json

Additional observations:
* SnapCenter cannot complete discovery because one or more Oracle LVM Volume
Groups are in ???exported??? state instead of ???active???.
* SnapCenter logs show the GetMetadata phase is missing in failed jobs.
* Multipath configuration confirms LUNs are present and accessible at the SCSI
layer.
* Kernel logs may show critical target errors on LUN devices, which can trigger
automatic VG export.
* In the debug logs of the SnapCenter Plug???in for Oracle, the internal lvs
command used to identify the volume group now returns ???not an LVM volume??? for
the Oracle data device, whereas it previously reported it as belonging to a
valid volume group ??? indicating the LVM setup on the database
device/partition is no longer correct.