You can help minimize recovery time by changing the recovery interval configuration parameter. The default value of 5 minutes per database works for most installations. Reduce this value only if functional requirements dictate a faster recovery period. Reducing the value increases the amount of I/O required.
See Chapter 5, “Memory Use and Performance,” in Performance and Tuning Series: Basics.
Recovery speed may also be affected by the value of the housekeeper free write percent configuration parameter. The default value of this parameter allows the server’s housekeeper wash task to write dirty buffers to disk during the server’s idle cycles, as long as disk I/O is not increased by more than 20 percent.
