Issue

Failed to take System State backup with error message “The backup operation that started has failed with following error code ‘2155347997’”

Observation

• System State backup fails with error: “The backup operation that started has failed with following error code ‘2155347997’”

• System State backup initiated from Backup Server, failed immediately with error message “Status 156 ERR – Volume resolution error for (System State:\System Files\System Files)”

• On client machine, VSS writer: Status [5] waiting for completion (Before the backup task failed)

• In Procmon and Backup ETL logs found that VSS writer was not able to resolve following paths:

h:\orahome_2\bin\ocssd.exe

h:\orahome_2\bin\nmesrvc.exe

h:\orahome_2\opmn\bin\opmn.exe

• In VSS writer metadata file, System writer was trying to resolve same paths

• In Disk Management and Windows Explorer, could not find volume H:

Cause

Following paths are stale (invalid) entries as volume H:\ is no longer available on the client machine

h:\orahome_2\bin\ocssd.exe

h:\orahome_2\bin\nmesrvc.exe

h:\orahome_2\opmn\bin\opmn.exe

Solution

To resolve the issue, create registry key to exclude these path from VSS Writers Metadata. VSS writers will exclude these files while Writer Metadata file

• Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SystemWriter

• On the Edit menu, point to New, and then click Multi-String Value.

• Type ExcludedBinaryPaths, and then press ENTER. Note

• Right-click ExcludedBinaryPaths, and then click Modify.

• In the Value data box, type all binary paths that should be excluded from the system state backup operation, and then click OK.

• Restarted Cryptographic service

• Restarted the system backup task

Additional Steps

If the System State backup continue to fail with error: “Status 156 ERR”

• Check VSS writer Metadata file and search for stale (invalid) paths

• Search Windows Registry for such paths, take backup of the registry key and deleted key

• Restarted Cryptographic service.

• Restarted the system backup task