Aleem, A dirty buffer is a data block that has been changed by a user. When a user selects/updates/deletes from a table, the data from that table is pulled in to the "buffer cache", where it can then be manipulated.. If a user selects for update, and then updates that data it is then known as "dirty" - or in simpler terms "changed", and should be written to disk (physical) storage, instead of being kept in memory (or the buffer cache).
HTH Mark -----Original Message----- Sent: 13 May 2002 12:43 To: Multiple recipients of list ORACLE-L Hi, In a book I read that DBWO writes dirty data buffers from data buffer cache to the data files. I would appreciate if someone could kindly clear my confusion. What is meant by dirty data buffers? If these are dirty (not good/healthy) why to write to these to data files? TIA! Aleem -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Abdul Aleem INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Mark Leith INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
