MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix C: OLE DB Properties
Property group: Data Source Information
Property set: DBPROPSET_DATASOURCEINFO
Type: VT_I4
Typical R/W: R
Description: Active Sessions
Specifies the maximum number of sessions that can exist at the same time. If this property is set to zero, there is no limit on the number of sessions that can exist at one time.