Cause: The foreground process doing instance recovery died. Action: Check the foreground trace file for the cause of recovery failure.
Cause: A clone database open forces logfile renaming to avoid overwriting the primary logfiles Action Rename the logfiles manually or using the log_file_name_convert initialization parameter
Cause: The specified process did not start. Action: Ensure that the executable image is in the correct place with the correct protections, and that there is enough memory.
Cause: It has been detected that an online log that is being archived has been reused Action: Cannot archive the logfile anymore since it has been overwritten
Cause: The redo block indicated by the accompanying error, is not vaild. It has a checksum that does not match the block contents. Action: Do recovery with a good version of the log or do time based recovery up to the indicated time. If this happens when archiving, archiving of the problem log can be…
Cause: An attempt to switch the current log of a single thread is not allowed because the compatiblity requirements force a new log format version number. When changing log formats, all threads must switch to the new format at the same time. Action: Open the database to cause the coordinated log switch. If that is…
Cause: The file header for the redo log contains a checksum that does not match the value calculated from the file header as read from disk. This means the file header is corrupted Action: Find the correct file and try again.