Out of memory is being passed to you through Crystal, it doesn't mean CR is running out of memory. Our database Drivers are Dynamic, meaning we support whatever the client supports. If the client runs out of memory we simply pass that error through to you.
Appears you may be using a Java JDBC connection or Java based VPN client. Talk to the people who support it and see if you can extend the memory to 1 Gig or something like that.
18 mil records is a lot but CR can handle it.
Odd that OLE DB works which shows it's not a CR issue, and also indicates it's an ODBC or VPN client issue.
YOu could try SQLCON or some other ODBC tool, copy the Query from CR and paste it into the ODBC test tool and see what happens.
Microsoft has a tool called ODBCTest, just connect and run SQL and paste in from the report and see what happens.
Don