Hello list members, I am running apps 11.5.10.2 on 9.2.0.6 db. I have a two node middle tier and 2 node RAC database tier. I need to set up both load balancing between the two middle tiers and failover. I am following note 279956.1. When I take down the master db node and try to connect through the app, it is not failing over to the remaining live db node. It still wants to connect to only the 1st db node. The load balancing was working correctly as I could see processes on both servers. The questions I have are.... Do the entries in the tnsnames.ora need to be in a certain order? Does the TWO_TASK on the middle tier need to match the TWO_TASK on db tier? Are there certain formats for entries in the tnsnames for different db/app versions? Does anyone have examples they could share or any other documents that would be helpful. We thought our consultant had this all set up correctly and tested but found out differently when the master db server died and I could not failover to the second node. I definitely learned you need to perform your own testing. Thank you for any help. Belinda --------------------------------------------------------------- This email, including any attachment(s) to it, is confidential and intended solely for the use of the individual or entity to which it is addressed. If you have received this email in error, please notify the sender. Note that any views or opinions presented in this email are solely those of the author and do not represent those of O'Brien & Gere. O'Brien & Gere does not accept liability for any damage caused by any virus transmitted by this email. The recipient should check this email and any attachments for the presence of viruses. ---------------------------------------------------------------