| ERROR | log string of open instance string (thread string) is the current log, cannot archive |
| CAUSE | An attempt was made to archive the current log of an open thread. This is not allowed because the redo log file may still be in use for the generation of redo entries. |
| ACTION | Force a log switch in the instance where the thread is open. If no instances are open, open the database so that instance recovery can recover the thread. |