Preventing Log File Creation

The BIS logging service is disabled by default. It is only enabled if you set the BIS_LOG system-wide environment variable. The values for BIS_LOG are:

• OFF - Disables logging (the same as if BIS_LOG is not specified or is blank).
• ON - Enables logging and directs the log files into the default location, which is guaranteed to be writable.
• <directory> - Enables logging and directs the log files into the specified directory. The user must ensure that it is writable by the BIS request handler.

  The directory must be an absolute path or network path. If the specified directory does not exist, BIS attempts to create it. Note that the containing directory must exist.

The BIS_LOG variable is only examined when the BIS application pool is started or recycled. Be sure to restart IIS after changing this variable so it takes effect.