1Z0-053單項選擇題每日一練(2019.01.13)

A. 20% SGA  80% PGA
B. 25% SGA  75% PGA
C. 50% SGA  50% PGA
D. 75% SGA  25% PGA
E. 80% SGA  20% PGA

A. All three tables in the recycle bin are purged
B. Only the table with the oldest DROPSCN is purged
C. The command returns an error because multiple entries with the same name exist in the recycle bin
D. Only the table with the latest DROPSCN is purged

A. It contains data till the last backup
B. It contains all data from target database until the current time
C. It contains all data from only the committed transactions in the target database
D. It contains all data except that which is used by the transactions in the current online redo file of target database

A. list database backup
B. report database backup
C. list backup of database
D. list summary backup
E. report backup of database

A. Change the retention criteria.
B. Make the lost backup set pieces available to RMAN again.
C. Run the crosscheck command to correct the location for the backup set piece contained in the metadata.
D. Nothing. The backup set piece is lost forever.
E. Call Oracle support，their assistance is required.