MDAC 2.5 SDK - OLE DB Programmer's Reference
Chapter 19: OLE DB Services
Individual OLE DB services can be enabled or disabled by default for all consumers that access a single provider. This is done by adding an OLEDB_SERVICES registry entry under the provider's CLSID, with a DWORD value specifying the services to enable or disable as shown in the following table.
| Default services enabled | DWORD value |
| All services (default) | 0xffffffff |
| All except pooling and automatic transaction enlistment | 0xfffffffc |
| All except Client Cursor Engine | 0xfffffffb |
| All except pooling, automatic transaction enlistment, and Client Cursor Engine | 0xfffffff8 |
| Pooling and automatic transaction enlistment, session level aggregation only | 0x00000003 |
| No services | 0x00000000 |
| No aggregation, all services disabled | (No registry entry) |