Question

I need to know a way to check from a Java Desktop App, if a Oracle’s view exist in the current DB before execute a query otherwise I will get a lot of troubles…

thanks in advance

Answer 1

You can always query the Oracle data dictionary. Something like

SELECT COUNT(*)
  FROM all_views
 WHERE view_name = <<the name of the view>>
   AND owner     = <<the owner of the view>>

will tell you whether you have access to a view owned by the specified user with the specified name.

Alternately, you can use a more Java-centric approach. You can create a DatabaseMetaData object from your Connection and call getTables to get a list of all the tables and views that you have access to. You can pass getTables a specific table or view name (or a pattern) to restrict the results.