This question has an incredibly broad answer, more than what can be answered completely in a forum message. Generally, the more you know about the operating system, regardless of RDBMS...

Maybe this will help:

Introduction to Web Logic JDBC

You said you installed an instance. Try, just for grins, to connect to the server using \.

See if you can get a list of what they changed. Verify the account in question has the right to Log on as a batch job. This often gets broken...

SQL Server doesn't start or your Enterprise Manager connection?

Typically in order to do this you have to set the SQL Server Agent proxy account. Verify this account still is valid (username/password). You can find out who this is...

Crystal Reports 8.0 modified permissions in the registry. Unfortunately, this broke quite a few other systems, to include ASP web pages, etc. You might try and reset permissions based on...

You will probably need to look for JDBC drivers since Weblogic is a J2EE web engine.

Do you have Crystal Reports 8.0 installed on your system?

You've hit the nail on the head. If you are using connection pooling and the login parameters are the same, once you activate an application role, it's active for that...

What was the exact error message?

It is very possible to decrypt, especially if you have sysadmin rights. SysAdmin rights:

dOMNAR's SysComments Decryptor

If you don't, but you have CREATE PROC rights, you'll need...

Without a full blown SAN? Yes. Without a dedicated shared storage array? No. You're going to need some sort of hardware to support the shared drives. You'll need at least...

There are a couple of issues with application roles. First, the application has to make a stored procedure call in order to activate the application role. Once that application role...

Piggy-backing on what Andy has said, if you're on SQL Server 2000, take a look at INSTEAD OF TRIGGERS. INSTEAD OF TRIGGERS fire before the data is touched, meaning you...