Case Sensitivity
The case-sensitivity setting of your Sybase IQ database should match the settings used by any remote servers accessed.
Connectivity Problems
To verify you can connect to a remote server, perform a simple passthrough statement to a remote server to check your connectivity and remote login configuration.
General Problems with Queries
If there is an issue with a query against a remote table, it is usually helpful to understand how Sybase IQ executes that query.