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## 00250-00299: Archiving and Recovery Messages

This section lists the messages generated when archiving or recovery of the database is in progress.

##### ORA-00250: archiver not started

Cause: An attempt was made to stop automatic archiving, but the archiver process was not running.

Action: No action required.

##### ORA-00251: LOG_ARCHIVE_DUPLEX_DEST must be different from LOG_ARCHIVE_DEST

Cause: The destination pointed by the LOG_ARCHIVE_DUPLEX_DEST initialization parameter is the same as the destination pointed by LOG_ARCHIVE_DEST.

Action: Specify a different destination for either LOG_ARCHIVE_DUPLEX_DEST or LOG_ARCHIVE_DEST.

##### ORA-00252: log name of thread num is empty, cannot archive

Cause: The specified redo log was not used since it was introduced to the database. It is also possible that the instance died during a log switch, and the log was left empty.

Action: Empty logs do not need to be archived. Do not attempt to archive the redo log file.

##### ORA-00253: limit of num exceeded by length num of archive string name

Cause: The specified archive string is too long. The limit is given in the message.

Action: Use a shorter string, making sure not to exceed the given limit and try again.

##### ORA-00254: error in archive control string archive_log_location

Cause: The specified archive log location is invalid in the archive command or the LOG_ARCHIVE_DEST initialization parameter.

Action: Specify a valid location name.

##### ORA-00255: error archiving log name of thread num, sequence # num

Cause: An error occurred during archiving.

Action: Check the accompanying message stack for more detailed information. If the online log is corrupted then the log can be cleared using the UNARCHIVED option. This will make any existing backups useless for recovery to any time after the log was created, but does allow redo to be generated.

##### ORA-00256: error occurred in translating archive text string str

Cause: An error occurred while translating the archive control string.

Action: Check the accompanying message stack for more detailed information.

##### ORA-00257: archiver is stuck. CONNECT INTERNAL only, until freed

Cause: The ARCH process received an error while trying to archive a redo log file. If the problem is not resolved soon, the database will stop executing transactions. The most likely cause of this message is that the destination device is out of space to store the redo log file.

Action: Check the archiver trace file for a detailed description of the problem. Also, verify that the device specified in the initialization parameter ARCHIVE_LOG_DEST is set up properly for archiving.

##### ORA-00258: manual archiving in NOARCHIVELOG mode must identify log

Cause: An attempt was made to archive a redo log file manually without specifying the sequence number, group number, or filename while the database was in NOARCHIVELOG mode.

Action: The name, group number, or thread and sequence number of redo log files must be specified to archive redo log files manually while the database is in NOARCHIVELOG mode.

##### ORA-00259: log name of open thread num 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 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 instance recovery can recover the thread.

##### ORA-00260: cannot find online log sequence num for thread num

Cause: The log sequence number specified in the ARCHIVE statement does not match any of the online logs for the specified thread. This can result from any of the following situations:

- This log may have been reused for another sequence number.
- This log may have been dropped.
- The sequence number may be greater than the current log sequence number.
- The thread may not have any logs.

Action: Check the ARCHIVE statement; then specify a valid log sequence number.

##### ORA-00261: log name of thread num is being archived or modified, cannot archive

Cause: Either the log is being archived by another process or an administrative command is executing and modifying the log. Clearing, adding a member, dropping a member, renaming a member, and dropping the log are operations that modify a log.

Action: Wait for the current operation to complete and try again.

##### ORA-00262: current log name of closed thread num cannot switch

Cause: The log cannot be cleared or manually archived because it is the current log of a closed thread, and it is not possible to switch logs so another log is current. All other logs for the thread need to be archived or cleared and cannot be reused.

Action: Archive another log in the same thread first or complete the clearing. See attached errors for the reason the switch cannot be completed.

##### ORA-00263: there are no logs that need archiving for thread num

Cause: An attempt was made to archive the unarchived logs in this thread manually, but no logs need archiving.

Action: No action required.

##### ORA-00264: no recovery required

Cause: An attempt was made to perform media recovery on files that do not need any type of recovery.

Action: Do not attempt to perform media recovery on the selected files. Check to see that the filenames were entered properly. If not, retry the command with the proper filenames.

##### ORA-00265: instance recovery required, cannot set ARCHIVELOG mode

Cause: The database either crashed or was shut down with the ABORT option. Media recovery cannot be enabled because the online logs may not be sufficient to recover the datafiles.

Action: Open the database and then enter the SHUTDOWN command with the NORMAL or IMMEDIATE options.

##### ORA-00266: name of archived log file needed

Cause: During media recovery, the name of an archived redo log file was requested, but no name was entered.

Action: Mount the correct redo log file and enter its name when it is requested.

##### ORA-00267: name of archived log file not needed

Cause: During media recovery, the name of an archived redo log file was entered, but no name was requested.

Action: Continue media recovery, but do not enter a new log name.

##### ORA-00268: specified log file does not exist name

Cause: The given redo log file does not exist.

Action: Check the spelling and capitalization of the filename and retry the command.

##### ORA-00269: specified log file is part of thread num not num

Cause: The given redo log file is not part of the given thread.

Action: Check that the thread of the redo log file matches the thread on the command line. If not, use a redo log file from the appropriate thread. Retry the command after correcting the error.

##### ORA-00270: error creating archive log

Cause: An error was encountered when either creating or opening the destination file for archiving.

Action: Check that the archive destination is valid and that there is sufficient space on the destination device.

##### ORA-00271: there are no logs that need archiving

Cause: An attempt was made to archive the unarchived redo log files manually, but there are no files that need to be archived.

Action: No action required.

##### ORA-00272: error writing archive log

Cause: An I/O error occurred while archiving a redo log file.

Action: Check that the output device is still available and correct any device errors that may have occurred. Also, make certain that sufficient space for archiving is available on the output device.

##### ORA-00273: media recovery of direct load data that was not logged

Cause: A media recovery session encountered a table that was loaded by the direct loader without logging any redo information. Some or all of the blocks in this table are now marked as corrupt.

Action: The table must be dropped or truncated so that the corrupted blocks can be reused. If a more recent backup of the file is available, try to recover this file to eliminate this error.

##### ORA-00274: illegal recovery option str

Cause: An illegal option was specified for a recovery command.

Action: Correct the syntax and retry the command.

##### ORA-00275: media recovery has already been started

Cause: An attempt was made to start a second media recovery operation in the same session.

Action: Complete or cancel the first media recovery session or start another session to perform media recovery.

##### ORA-00276: CHANGE keyword specified but no change given

Cause: The CHANGE keyword was specified on the command line, but no change number was given.

Action: Retry the command using a valid change number after the CHANGE keyword.

##### ORA-00277: illegal option to the UNTIL recovery flag str

Cause: Only CANCEL, CHANGE and TIME can be used with the UNTIL keyword.

Action: Correct the syntax.

##### ORA-00278: log file name no longer needed for this recovery

Cause: The specified redo log file is no longer needed for the current recovery.

Action: No action required. The archived redo log file may be removed from its current location to conserve disk space, if needed. However, the redo log file may still be required for another recovery session in the future.

##### ORA-00279: change num generated at name needed for thread num

Cause: The requested log is required to proceed with recovery.

Action: Please specify the requested log in the command or cancel recovery.

##### ORA-00280: change num for thread num is in sequence #num

Cause: This message helps to locate the redo log file with the specified change number requested by other messages.

Action: Use the information provided in this message to specify the required archived redo log files for other errors.

##### ORA-00281: media recovery may not be performed using dispatcher

Cause: An attempt was made to use a dispatcher process for media recovery. Memory requirements disallow this recovery method.

Action: Connect to the instance via a dedicated server process to perform media recovery.

##### ORA-00282: UPI name call not supported, use ALTER DATABASE RECOVER

Cause: The given UPI call is no longer supported.

Action: Use the ALTER DATABASE RECOVER command for all recovery actions.

##### ORA-00283: recovery session canceled due to errors

Cause: An error during recovery was determined to be fatal enough to end the current recovery session.

Action: More specific messages will accompany this message. Refer to the other messages for the appropriate action.

##### ORA-00284: recovery session still in progress

Cause: An error during recovery was determined to be minor enough to allow the current recovery session to continue.

Action: More specific messages will accompany this message. Refer to other messages for the appropriate action.

##### ORA-00285: TIME not given as a string constant

Cause: UNTIL TIME was not followed by a string constant for the time.

Action: Enter the time enclosed in single quotation marks.

##### ORA-00286: no members available, or no member contains valid data

Cause: None of the members of a redo log file group are available, or the available members do not contain complete data.

Action: If a member is temporarily off line, attempt to make it available. Check that the correct filenames are being used, especially if the redo log file is being accessed from a remote location.

##### ORA-00287: specified change number num not found in thread num

Cause: The given change number does not appear in any of the online redo logs for the given thread.

Action: Check the statement to make certain a valid change number is given. Perhaps try to use the NEXT option for archiving logs.

##### ORA-00288: to continue recovery type ALTER DATABASE RECOVER CONTINUE

Cause: During media recovery, redo information from a new log is not required but the continuation command is necessary to do a checkpoint and report errors.

Action: Type ALTER DATABASE RECOVER CONTINUE and recovery will resume.

##### ORA-00289: suggestion: filename

Cause: This message reports the next redo log filename that is needed, according to the initialization parameters LOG_ARCHIVE_DEST and LOG_ARCHIVE_FORMAT. This message assumes that LOG_ARCHIVE_DEST and LOG_ARCHIVE_FORMAT are the same now as when the required redo log file was archived.

Action: Consider using this filename for the next log needed for recovery.

##### ORA-00290: operating system archiving error occurred. See error below

Cause: While attempting to archive to a redo log file, the server encountered an unexpected operating system error.

Action: Correct the operating system error given in the messages and retry the operation. See also your operating system-specific Oracle documentation.

##### ORA-00291: numeric value required for PARALLEL option

Cause: A recovery command was specified incorrectly. The PARALLEL option must be followed by a numeric argument that specifies the degree of parallelism.

Action: Re-enter the command with a numeric argument specifying the degree of parallelism desired.

##### ORA-00292: parallel recovery feature not installed

Cause: A parallel recovery was requested when the parallel recovery option is not installed.

Action: Delete the PARALLEL clause from the RECOVER command. Also, delete the RECOVERY_PARALLELISM parameter in the initialization file.

##### ORA-00293: control file out of sync with redo log

Cause: The redo log and control file are out of sync because a non-current control file was specified when the instance was started.

Action: Retry the Recover command using the current control file or retry the Recover command using the USING BACKUP CONTROL FILE clause.

##### ORA-00294: invalid archivelog format specifier name

Cause: An invalid format specifier was found in the LOG_ARCHIVE_FORMAT initialization parameter. The only characters permitted following the % symbol are s, S, t, and T.

Action: Correct the initialization file and re-start the instance.

##### ORA-00295: datafile number num is invalid, must be between 1 and num

Cause: An invalid file number was specified.

Action: Specify a correct datafile number and retry the operation.

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