arun chakrapani rao wrote: >Sorry for the confusion Rac Gurus >I was refering to the split brain in rac env >I was not able to get a clear doc on io fencing which >the crs take care of. > > Good document to look at is Metalink Note:219361.1 . Good description of the split brain wait parameter can also be found at ORAFAQ http://www.orafaq.com/parms/parm458.htm In case of Oracle 9.2.0, list of hidden parameters can be found at:: http://www.orafaq.com/parms/index920.htm A mandatory document to tattoo on your skin is: Note:220024.1. Of course, the sad story of dr. Jekyll and Mr. Hyde is also an amusing reading and nurse Ratchet is one among the classic literary characters, so I will not withdraw my earlier recommendations. -- Mladen Gogala Oracle DBA Ext. 121 -- //www.freelists.org/webpage/oracle-l