Hi List, We will be soon having a system and it requires strictly 0% data loss in any case . Not even a single commited transaction should be lost. The setup will be 9iR2 on win2k . Standby database (max protection mode) may be a choice.But the primary DB tends to go down if it is not able to communicate with standby DB.this reduces the availability of my primary DB and so is not my option.And standby database in ( max availability mode) can have data loss and hence is ruled out. any HA suggestion ?! can someone let me know how it can be acheived ? Regards, Prem. ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------