DBI connect('host=myhost;port=1433;database=mydb','user',...) failed: Server message number=4064 severity=11 state=1 line=0 server=Servername\Instancename text=Cannot open user default database. Login failed.
Server message number=18456 severity=14 state=1 line=0 text=Login failed for user 'user'.
OpenClient message: LAYER = (0) ORIGIN = (0) SEVERITY = (78) NUMBER = (34)
Server , database 
Message String: Adaptive Server connection failed
 at test.pl line 9
unable to connect to server Server message number=4064 severity=11 state=1 line=0 server=Servername\Instancename text=Cannot open user default database. Login failed.
Server message number=18456 severity=14 state=1 line=0 text=Login failed for user 'user'.
OpenClient message: LAYER = (0) ORIGIN = (0) SEVERITY = (78) NUMBER = (34)
Server , database 
Message String: Adaptive Server connection failed