TDI 7.1 Error CTGDIJ037E. Cannot connect to Database when configuring JDBC Connector.

Problem:

Cannot connect to database configuring TDI JDBC connector. Getting CTGDIJ037E error or SQLCODE=-204, SQLSTATE=42704 (which means 'no such table').

Here's an example:

or another one:

Answer:
Both errors mean 'Wrong schema name'. Let's see. Username is LCUSER. Then default schema name is LCUSER. But my actual schema name is EMPINST. That means I should specify my schema name somewhere. In second case I tried to give it in a table name field but that didn't work. I also cannot do it using connection string. But lower there's a field for Extra Provider Paramaters. There I point real schema name like this:

and press Connect. The problem is solved.