Hi, I went thru the site http://www.postgresql.org/docs/7.4/static/wal-benefits-later.html Undo operation is not implemented. and information of the status regarding the transaction is stored in the permanent file pg_clog. But I have not been able to see the format of the file, as this file is in binary format. Same for the redo file. Could you please send me the format of the redo and pg_clog file. Also, give me some idea as to what do we need to change to implement undo-file. Thanks Mamta
________________________________________________________________________ Yahoo! India Matrimony: Find your life partner online Go to: http://yahoo.shaadi.com/india-matrimony ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
