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Oracle® Database 11g error code ORA-01230

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ORA-01230: cannot make read only - file [string] is offline
Cause: An attempt to make a tablespace read only found that one of its files is offline.
Action: Bring the file online and retry this command.
Discussions and Solutions for ORA-01230
ORA-01230: cannot make read only - file [string] is offline
Tips to resolve Oracle® Database error ORA-01230

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