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Thread: archive log

  1. #1
    Join Date
    Oct 2007
    Posts
    114

    archive log

    Hi Friends,

    Im a little confused about terminologies in archive logging.
    These are to start archive logging and to start auto archiving.
    Are they different process?

    As what I understood:
    To start acrhive log > alter system archive log start;
    To start auto archive> edit pfile and enable_archive_log=true

    I am correct?

    Thanks

  2. #2
    Join Date
    Sep 2002
    Location
    England
    Posts
    7,333
    no, wrong on both counts

    Better start reading those doc

  3. #3
    Join Date
    Dec 2007
    Posts
    16
    for archiving
    startup mount
    alter database archivelog;
    alter database open
    alter system log archive start//for automatic archiving

  4. #4
    Join Date
    Oct 2007
    Posts
    114
    Thanks a lot friend, thats so very kind of you.
    Im using 9i and I want to stop generating archive logs because it generates lots of files. And this is just a development and test server. I read about it and got a little confused. I was able to enable archiving but I forgot how to disable it

    So If I want to stop generating lots of logs but I dont want to froze the transaction activity and make the database hung. Is the command :
    ALTER SYSTEM ARCHIVE LOG STOP or
    ALTER SYSTEM NOARCHIVELOG

    If im in 9i do I still edit some spfile parameter?

    Thanks a lot

  5. #5
    Join Date
    Dec 2007
    Posts
    16
    alter database noarchivelog

  6. #6
    Join Date
    Oct 2007
    Posts
    114
    thanks

  7. #7
    Join Date
    Apr 2007
    Location
    USA
    Posts
    110
    Quote Originally Posted by reeshe
    Thanks a lot friend, thats so very kind of you.
    Im using 9i and I want to stop generating archive logs because it generates lots of files. And this is just a development and test server. I read about it and got a little confused. I was able to enable archiving but I forgot how to disable it

    So If I want to stop generating lots of logs but I dont want to froze the transaction activity and make the database hung. Is the command :
    ALTER SYSTEM ARCHIVE LOG STOP or
    ALTER SYSTEM NOARCHIVELOG

    If im in 9i do I still edit some spfile parameter?

    Thanks a lot
    What is wrong with it generating lots of files?
    Word of caution..just because it is dev does not mean they would take it kindly if you told them tomorrow that you can;t recover the latest transaction. If application is testing, changing,modifying and putting in a lot of work you don't want them starting over. Your decision has to involve them.
    Looking for the greatest evil in the world? Look in the mirror.

  8. #8
    Join Date
    Nov 2007
    Location
    Douala, Cameroun.
    Posts
    77
    Reeshe,

    You should know that, in real life situation one of the decisions that the DBA has to take is whether or not to operate his database in Archivelog mode. This means he has to have a thorough understanding of both operating mode. By default a database runs in noarchivelog mode. When you want to shift to archive mode, some configurations are necessary. You should add few parameters in you init.ora file. But the most important are:
    log_archive_start=true, log_archive_dest and log_archive_format. Of course you do that after cleanly shutting down you database. Once those parameters are configured, you start up your Db in mount stage and issue the alter database archivelog command. Next you shut it down(cleanly) again and start it anew. You can check whether the archiving is enable by querying the v$database table and selecting the log_mode field. If you wanna stop the automatic archiving you start the Db in mount stage and issue the alter database noarchivelog.

  9. #9
    Join Date
    Nov 2007
    Location
    Douala, Cameroun.
    Posts
    77
    Reeshe,

    You should know that, in real life situation one of the decisions that the DBA has to take is whether or not to operate his database in Archivelog mode. This means he has to have a thorough understanding of both operating mode. By default a database runs in noarchivelog mode. When you want to shift to archive mode, some configurations are necessary. You should add few parameters in your init.ora file. The most important are:
    log_archive_start=true, log_archive_dest and log_archive_format. Of course you do that after cleanly shutting down you database. Once those parameters are configured, you start up your Db in mount stage and issue the alter database archivelog command. Next you shut it down(cleanly) again and start it anew. You can check whether the archiving is enable by querying the v$database table and selecting the log_mode field. If you wanna stop the automatic archiving you start the Db in mount stage and issue the alter database noarchivelog.

  10. #10
    Join Date
    Sep 2002
    Location
    England
    Posts
    7,333
    Quote Originally Posted by abdel
    Reeshe,

    You should know that, in real life situation one of the decisions that the DBA has to take is whether or not to operate his database in Archivelog mode. This means he has to have a thorough understanding of both operating mode. By default a database runs in noarchivelog mode. When you want to shift to archive mode, some configurations are necessary. You should add few parameters in you init.ora file. But the most important are:
    log_archive_start=true, log_archive_dest and log_archive_format. Of course you do that after cleanly shutting down you database. Once those parameters are configured, you start up your Db in mount stage and issue the alter database archivelog command. Next you shut it down(cleanly) again and start it anew. You can check whether the archiving is enable by querying the v$database table and selecting the log_mode field. If you wanna stop the automatic archiving you start the Db in mount stage and issue the alter database noarchivelog.

    why add a reply over a week later and add nothing?

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