Database Administration (MOSC)

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Changing to read-only mode without stopping database in 12c?

edited Mar 10, 2015 4:04AM in Database Administration (MOSC) 1 comment

Hi! When creating a PDB by cloning a non-CDB, per documentation it is required that the source non-CDB is in read-only mode. However, from experience I see even if it is in read-write mode, the cloning operation works. However, during the PDB cloning operation the source non-CDB is effectively in read-only mode, because any write attempt fails with ORA-16000. My question is: how is it implemented this "temporary read-only mode" in the source non-CDB without stopping it? Thank you

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