Hi all, Conifguration Dataguard with Physical Standby and real time apply in Max performance mode between two 8 node RAC clusters Platform Sun Sparc Solaris 64 bit Oracle 10.2.0.3 + 25 one off patches (the application uses most Oracle features ) Transaction rate: 600 tps I am setting up Dataguard and would like to know if there are any "must have" patches in regards to MRP, switchover etc for the above config. I am aware of DG bundle patches and bundle patchset 1 which was released in August 2007. If any of you have come across a latter bundle and have had to apply it please let me know Thanks much Fairlie Fairlie Rego Senior Oracle Consultant http://el-caro.blogspot.com/ M: +61 402 792 405 --------------------------------- Get the name you always wanted with the new y7mail email address.