1:查看、修改AWR报告快照数据的采样间隔、保存策略
SQL> COL DBID FOR 999999999999
SQL> COL SNAP_INTERVAL FOR A26
SQL> COL RETENTION FOR A26
SQL> COL TOPNSQL FOR A10
SQL> select * from dba_hist_wr_control;
DBID SNAP_INTERVAL RETENTION TOPNSQL
------------- -------------------------- -------------------------- ----------
3990839260 +00000 01:00:00.0 +00014 00:00:00.0 DEFAULT
SQL>