Once a while, a SQL 6.5 SERVER hangs up. We always to get an error message from EVENT VIEW of Window NT 4 server.
The error is :
DB-LIBRARY error - SQL Server connection timed out.
Source: SQLCTR60

1. What kind problem it is?

2. What is SQLCTR60.DLL doing? In 7.0 and 2000, these files are SQLCTR70.DLL and SQLCTR80.DLL. In BOL I can't find information of these file.
Where can we find all file description in BINN directory?

Any 7.0 and 2000 experience is helpful.

Thanks


Jim