UNDO_MANAGEMENT

Parameter type	String
Syntax	UNDO_MANAGEMENT = {MANUAL | AUTO}
Default value	MANUAL
Parameter class	Static
Oracle9i Real Application Clusters	Multiple instances must have the same value.

UNDO_MANAGEMENT specifies which undo space management mode the system should use. When set to AUTO, the instance starts in automatic undo management mode. In manual undo management mode, undo space is allocated externally as rollback segments.