The ODBC driver and its data source ultimately determine whether a cursor is stable during the commit or rollback of a transaction and if the cursor can persist beyond a single transaction scope. The DataServer normally resolves cursor characteristics by interrogating the driver and setting the run-time environment accordingly. OpenEdge does not recommend bypassing normal operation under most circumstances. However, if your driver and/or data source do not provide stable cursors, then under very specific circumstances, you might improve performance by setting the PRGRS_STABLE_CURS option to 1 (on). If all the ABL you run in your OpenEdge DataServer session is without transactions or if all of its queries and resultant data sets are fully processed on one or the other side of any existing transaction boundaries, setting this option is possible.