rocker and its effect on the program

Hi dear DBAs,

We have a business application, written using J2EE technologies. It uses a single oracle database. We decided to improve the availability of the application by making a database waiting for our primary database. After some research, we found that datagurad oracle is suited to our need. We have worked with him in a test environment and everything was all right, by using the grid GUI control. The question is, is it enough to set up a database for our main GC pending? or should we change our application code and settings to match the new architecture? In the case of a failover or a failover, how application includes the address of the new database?

Thanks in advance

Hi Z0lenDer,

From a database point of view, DataGuard will provide more rapid data recovery and protection of your application data. But for the application to continue working after a failover of the database / failover, you must update your application code and configure to connect to the database from backup when it becomes active.

This change will refer to the application layer, not in the grid control. You can either use a database trigger or recovery of connection in your application to connect descriptor to ask him to connect to the database instance active.

Discover the Guide de Configuration DB HA http://download.oracle.com/docs/cd/B19306_01/server.102/b25159/configbp.htm#sthref388

I hope this helps.

Farouk

Tags: Enterprise Manager

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