ORA-12850: Could not allocate slaves on all specified instances: [string] needed, [string] allocated

Cause: When executing a query on a gv$ fixed view, one or more instances failed to allocate a slave to process query.

Action: Check trace output for instances on which slaves failed to start. GV$ query can only proceed if slaves can be allocated on all instances.

Error Type: ORA

• Additional information for ORA-12850: Could not allocate slaves on all specified instances: [string] needed, [string] allocated12850
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