Hello,

When I execute the 'switchover -m restart', following error message appears:
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DGDCTL> SWITCHOVER -m RESTART -v
Refer to /oracle/HVD/817_64/dataguard/log/switchover_HVD.log on dphankt for detailed information
Would you like to continue?
(Y)es or (N)o? y
SWITCHOVER restarted at step 11
Step 11: Started: Mount New Standby dohankt
Substep 11.2: Create new standby controlfile failed: database nomount failure
Step 11: Mount new standby database failed
ALERT: switchover restart failed

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Is this info enought to say something about the situation, or what logs you needed?

Best Regards