Improved performance for single-threaded applications
You are likely to improve the performance of single-threaded applications by using the SINGLETHREADED connection parameter. The value is off by default.
Do not use this parameter in an XA/MSDTC environment.
You can set the SINGLETHREADED connection parameter in a connection
string as the following example shows:
DSN=xxx;Uid=xxx;Pwd=xxx;SINGLETHREADED=1;"