Dimitre: Thanks for the links for the documents. I am researching myself. I will let every one know soon. To answer your question, the OS is solaris 10 on the database servers, but the OS is solaris 9 on the Apps Server. I cannot do anything on the APPS server. Thanks you very much. Ram Srinivasan On Tue, Dec 20, 2011 at 11:04 AM, Radoulov, Dimitre <cichomitiko@xxxxxxxxx>wrote: > On 20/12/2011 16:55, Ram Srinivasan wrote: > > Hi Ram, > > > All: >> I have an Apps Server - Solaris 9 - Oracle Forms And Reports >> Installation >> - version 10.1.2.0.2. This was built in 2008, and noone has ever since >> touched it. An application is running on this server, which is used by >> hundreds of people. This application was developed and written by some >> team >> in 2008, which does not work here anymore, as their contract expired. >> This apps server is looking to a database at version 10.2.0.4.4. So far >> there is no problem. Application is working all right. >> >> Questions: >> >> 1. If I upgrade the underlying database to 10.2.0.5.3, will the >> application >> still talk to the database? >> 2. Later if I upgrade the underlying database to 11.2.0.2.2, will the >> application still talk to the database? >> >> Restrictions: I cannot touch the application software, nor the hardware. >> >> > Could you upgrade the OS? > Oracle 11.2 requires at least Solaris 10 Update 6. > > > Regards > Dimitre > -- Sincerely Ram Srinivasan -- //www.freelists.org/webpage/oracle-l