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TSM - What is recovery log ?what are the modes of recovery log ?




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asked mar February 9, 2015 02:01 AM  

What is recovery log ?what are the modes of recovery log ?


           

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answered By   0  

recovery log is nothing but record the changes what ever made to the database..there are two modes

1.normal mode 2.roll forward mode

1.in normal mode,we can recover the data only upto point-in-time means recovering the data upto last full backup..we can't recover changes what ever record after completion of last full backup... 2.in roll forward mode,we recover the data to most current state..b/c in roll forward mode records will not delete untill we take the full backup.. but normal mode is default...if u want to change to roll forward command is set mode but in tsm 6.3.0.0 version we have 3 logs 1.archive log 2.active log 3.fail over log.. but here recovery log is roll forward default...

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answered By keerthi   0  
The recovery log is used by the server to keep a record of all changes happen to database.

Changes(updates)include activities such as... 
  • defining a management class
  • backing up a client file
  • registering a client node etc

The changes to the database are recorded in the "Recover log" to maintain a consistent database image.

In simple way we can say - "The recovery log contains information about database updates that have not yet been committed."

THERE ARE 2 MODES FOR THE RECOVERY LOG
  1. normal mode
  2. roll forward mode
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