MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix C: OLE DB Properties
Property group: Rowset
Property set: DBPROPSET_ROWSET
Column? N
Type: VT_I4
Typical R/W: R/W
Description: Maximum Open Rows
Indicates the maximum number of rows that can be active at the same time. This limit does not reflect resource limitations such as RAM but does apply if the rowset implementation uses some strategy that results in a limit.
If there is no limit, the value of this property is zero. The provider is free to support a greater number of active rows than the maximum specified by the consumer. In this case, the provider will return its actual maximum number of active rows instead of the value specified by the consumer.