| ERROR | wrong creation SCN - control file expects initial plugged-in datafile |
| CAUSE | When a tablespace is plugged into a database, the tablespace is initially read-only. Oracle converts the header of the plugged-in datafiles (assign them a new creation SCN) when the tablespace is first made read-write. This error occurs when the creation SCN in the file header is different from the creation SCN in the control file, possibly because this is the converted datafile. |
| ACTION | Either restore the initial version of the plugged-in datafile, or continue database recovery, which will recover the control file. |