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 System Architecture  |  Question 19 of 33    Print  
What does LGWR do ?
Log  Writer (LGWR) writes redo log entries generated in the redo log buffer of the SGA to on-line Redo Log File.



  
Total Answers and Comments: 2 Last Update: September 18, 2006   
  
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February 21, 2006 03:56:15   #1  
rajat dey        
RE: What does LGWR do ?
hi It is one of the main background process in oracle . In oracle and unix environment you can check this process using ps -ef |pg command . which is writting all the uncommited transaction from SGA to redologfile .regrdsrajat dey
 
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September 18, 2006 04:13:46   #2  
manish hoiyani        
RE: What does LGWR do ?

LGWR is oracle background process.. all changes which have been made inthe database gets recorded in the redolog buffer..

so when the users fires an commit statement LGWR writes these changes it into thr redolog files. and also writes it into files when the redolog buffer is one thrid full... and also when buffer is nealy 1mb full lgwr writes it into redologfiles.


 
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 Related Questions

DBWR - Database Writer.LGWR - Log WriterCKPT - Check PointSMON - System MonitorPMON - Process MonitorARCH - ArchiverRECO - RecoverDnnn - Dispatcher, andLCKn - LockSnnn - Server. 
Latest Answer : Mandatory Processes DBWR - Database Writer.LGWR - Log WriterCKPT - Check PointSMON - System MonitorPMON - Process Monitor Optional Process ARCH - ArchiverRECO - RecoverDnnn - Dispatcher, andLCKn - LockSnnn - Server. ...
Log  Writer (LGWR) writes redo log entries generated in the redo log buffer of the SGA to on-line Redo Log File. 
Latest Answer : LGWR is oracle background process.. all changes which have been made inthe database  gets recorded in the redolog buffer.. so when the users fires an commit statement , LGWR writes these changes it into thr redolog files. and also writes it into ...
LGWR   writes  redo  log  entries  into  an  on-line  redo  log  file  when transactions commit and the log buffer files are full. 
Latest Answer : Log writer writes* when transaction commits* every three seconds* when 1/3 of redo full* when 1mb of redo generated* before dbwn writes ...

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