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问题:

[单选]

You have created a resource plan, PROD_DB_PLAN, that uses the RATIO policy. The following consumer groups and their respective plan directives have been assigned to this resource plan: Consumer group HIGH_CG with CPU_P1 as 10. 
Consumer group MEDIUM_CG with CPU_P1 as 5. 
Consumer group LOW_CG with CPU_P1 as 2. 
Consumer group OTHER_GROUPS with CPU_P1 as 1. 
Which statement is correct in this scenario?() 

A . The plan PROD_DB_PLAN can have subplans.
B . The members of the HIGH_CG consumer group would get 10% of the CPU.
C . The CPU allocation for the consumer groups would be based on the ratio defined for the CPU_P1.
D . The CPU allocation would be equal between the HIGH_CG and MEDIUM_CG consumer groups if there are no sessions existing for the LOW_CG and OTHER_GROUPS consumer groups.

Which  statements are true about checkpointing() The checkpoint frequency decreases with the smaller redo log file size.。 It ensures that all committed data is written to the data files during normal shutdown.。 The frequent full checkpoint in a database can cause the overall degradation of the database performance.。 It prompts the Checkpoint (CKPT) process to write data to the data files and redo information to the onlineredo log file。 多介质过滤器反洗时应启动() 冲洗泵。 原水泵。 反洗水泵。 脱盐水泵。 Which tasks are run automatically as part of the Automated Maintenance Task by default?() Segment Advisor。 SQL Access Advisor。 Optimizer statistics gathering。 Automatic SQL Tuning Advisor。 Automatic Database Diagnostics Monitor。 How can an administrator verify that the disk is still usable when the output of ‘lspv’ shows‘hdisk1’ is in a missing state?() lspv -l hdisk1。 lscfg -l hdisk1。 lsattr -l hdisk1。 dd if=/dev/hdisk1 bs=512k count=10 of=/tmp/disk.txt。 “应交税金”账户的贷方余额表示尚未缴纳的税金,借方余额表示多交的税金。

You have created a resource plan, PROD_DB_PLAN, that uses the RATIO policy. The following consumer groups and their respective plan directives have been assigned to this resource plan: Consumer group HIGH_CG with CPU_P1 as 10. 
Consumer group MEDIUM_CG with CPU_P1 as 5. 
Consumer group LOW_CG with CPU_P1 as 2. 
Consumer group OTHER_GROUPS with CPU_P1 as 1. 
Which statement is correct in this scenario?() 

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