HomeOracleOracle Error ORA-01640: cannot make tablespace read-only with changes by in-doubt transactions

Oracle Error ORA-01640: cannot make tablespace read-only with changes by in-doubt transactions

Oracle Error Message

ORA-01640: cannot make tablespace read-only with changes by in-doubt transactions

Reason for the Error

An attempt was made to alter a tablespace read-only while there were changes in the tablespace made by in-doubt distributed transactions. The in-doubt transactions must commit or rollback to ensure that there is no undo for a tablespace before it can be made read-only.

Solution

Any in-doubt transactions that made changes to the tablespace must be resolved.

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