JDBC adapter started but no message is created

I am not able to read data through JDBC adapter.

When we are starting our inbound JDBC adapter it get started and does not give any error

but no message is created in XI.When we check status of adapters by clicking main menu it is red.

Log of adapter shows.

JDBC adapter initializd succesfully.

JDBC adapter started.

Process query select * from ??????.

JDBC adapter processing complete.Restart for next processing.

But no message is created in XI.

Can the no of records be the cause of this problem.

Any help appericiated