HOWTO: Enable or Disable Connection Pooling in IIS 4.0

ID: Q189410

The information in this article applies to:

Microsoft Internet Information Server version 4.0

SUMMARY

ODBC connection pooling is enabled by default for ODBC drivers installed with Microsoft Option Pack 4.0. In Internet Information Server (IIS) 4.0 this setting is handled on a driver-by-driver basis. This article describes how to enable or disable this setting for any given ODBC driver.

MORE INFORMATION

ODBC connection pooling is configured through a registry setting saved with the ODBC driver information. This can be found in the Windows registry at the following location:


   \HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\<drivername>

Where <drivername> is the name of the ODBC driver in question. Connection pooling is configured by setting the STRING value CPTIMEOUT to a non-zero value. This value is the number of seconds a connection is held in the pool before being discarded. Setting CPTIMEOUT to 0 disables connection pooling. If the CPTIMEOUT value does not exist, connection pooling will be disabled for that driver.

REFERENCES

For information on setting this value programmatically, see the following articles in the Microsoft Knowledge Base:

Q164221 : INF: How to Enable Connection Pooling in an ODBC Application

Q166083 : INF: How to Enable Connection Pooling in an OLE DB Application

Keywords : kbGrpASP
Version : WINNT:4.0
Platform : winnt
Issue type : kbhowto