How to use different Oracle schemas in Crystal Reports?

Is it possible to use different Oracle schemas in Crystal Reports and change between them at runtime?

I have a report that uses three tables. The report was created using one database user schema. In the other schemas that I have to use, the names of the tables are the same. I need to change between them at runtime. Different users get different data depending on the schema they connect to. I set the servername, the userid, the password and then integratedsecurity to false. If I change/set the DatabaseName it doesn't work. I use Crystal Reports 2008.

Could you be kind and help me with this?

Thank you ve开发者_开发技巧ry much !

Don't use Crystal's database expert - instead, write SQL queries that do not specify schema. That way, the query will access the tables in the local schema when logged on to it.

eg:

Existing query:

select field1, field2, ...
from user_schema1.datatable

- will select data from user_schema1.datatable, regardless of which schema is logged on.

Amended query:

select field1, field2, ...
from datatable

- will select data from datatable in user_schema1 when logged on to user_schema1, from user_schema2 when logged on to user_schema2, etc.