DBA_HIST_RULE_SET displays historical information about rule set statistics.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| SNAP_ID | NUMBER | NOT NULL | Unique snapshot ID | 
| DBID | NUMBER | NOT NULL | Database ID for the snapshot | 
| INSTANCE_NUMBER | NUMBER | NOT NULL | Instance number for the snapshot | 
| OWNER | VARCHAR2(30) | NOT NULL | Owner of the rule set | 
| NAME | VARCHAR2(30) | NOT NULL | Name of the rule set | 
| STARTUP_TIME | DATE | NOT NULL | Startup time of the instance | 
| CPU_TIME | NUMBER | Total CPU time (in hundredths of a second) spent in evaluation of the rule set | |
| ELAPSED_TIME | NUMBER | Total elapsed time (in hundredths of a second) spent in evaluation of the rule set | |
| EVALUATIONS | NUMBER | Number of evaluations on the rule set | |
| SQL_FREE_EVALUATIONS | NUMBER | Number of evaluations on the rule set which did not internally issue SQL to evaluate rules | |
| SQL_EXECUTIONS | NUMBER | Total number of SQL statements executed during evaluation of the rule set | |
| RELOADS | NUMBER | Number of times the rule set object was reloaded in shared memory |