单项选择题
A. because AWR baseline is not enabled
B. because Current Open Cursors Count is not a basic metric
C. because the STATISTICS_LEVEL parameter is set to BASIC
D. because the AWR baseline is a system-defined moving window baseline
单项选择题 You performed the RMAN database backup having a backupset key number 231 with the KEEP FOREVER option. After some days, you want to change the status of the database backup and you issued the following command: RMAN>CHANGE BACKUPSET 231 NOKEEP; What is the implication of this command?（）
单项选择题 View the Exhibit to examine the metrics with a threshold.Which statement is true regarding the Number of Transactions (per second) metric?（）
单项选择题 Consider the following scenario for your database: Which statement is true regarding the backup of the TOOLS tablespace?（）
