ORA-12342: open mounts exceeds limit set on the OPEN_MOUNTS parameter
Cause: The number of currently open mounts exceeds the value you specified on the OPEN_MOUNTS parameter.
Action: Increase the value of the OPEN_MOUNTS parameter so that it accommodates the maximum possible number of open mounts to secondary databases.
ORA-12345
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ORA-12342open mounts exceeds limit set on the OPEN_MOUNTS parameter