To show adapter activity from query execution to network traffic, use Logfile and Verbosity. The examples of common connection errors below show how to use these properties to get more context. Contact the support team for help tracing the source of an error or circumventing a performance issue.

Authentication errors: Typically, recording a Logfile at Verbosity 4 is necessary to get full details on an authentication error.

Queries time out: A server that takes too long to respond will exceed the adapter's client-side timeout. Often, setting the Timeout property to a higher value will avoid a connection error. Another option is to disable the timeout by setting the property to 0. Setting Verbosity to 2 will show where the time is being spent.

The certificate presented by the server cannot be validated: This error indicates that the adapter cannot validate the server's certificate through the chain of trust. (If you are using a self-signed certificate, there is only one certificate in the chain.)

To resolve this error, you must verify yourself that the certificate can be trusted and specify to the adapter that you trust the certificate. One way you can specify that you trust a certificate is to add the certificate to the trusted system store; another is to set SSLServerCert.