Modes used for transmitting archived logs to their destination - Oracle Redo Log

Discussion

• Nirja Shah   -Posted on 24 Sep 15
  - The two modes of transmitting archived logs to their destination are normal archiving transmission and standby transmission mode.
  
  1. Normal Transmission Mode
  - In normal transmission mode, the archiving destination is another disk drive of the database server.
  
  - In this configuration archiving does not contend with other files required by the instance and can complete more quickly.
  
  - Specify the destination with either the LOG_ARCHIVE_DEST_n or LOG_ARCHIVE_DEST parameters.
  
  - It is good practice to move archived redo log files and corresponding database backups from the local disk to permanent inexpensive offline storage media such as tape.
  
  - A primary value of archived logs is database recovery, so you want to ensure that these logs are safe should disaster strike your primary database.
  
  2. Standby Transmission Mode
  - In standby transmission mode, the archiving destination is either a local or remote standby database.
  
  - If you are operating your standby database in managed recovery mode, you can keep your standby database synchronized with your source database by automatically applying transmitted archive logs.
  
  - To transmit files successfully to a standby database, either ARCn or a server process must do the following:
  Recognize a remote location
  Transmit the archived logs in conjunction with a remote file server (RFS) process that resides on the remote server

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