alter database open
alter database open repairlog
alter database open resetlogs
alter database open resetlog
alter database resetlogs open
第1题:
A user cannot set privileges on the persistent lightweight jobs
Persistent lightweight jobs generate a large amount of metadata
It is possible to create fully self-contained persistent lightweight jobs
The use of a template is mandatory to create persistent lightweight jobs
Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time
第2题:
A DBA can enable or disable an individual task in all maintenance windows.
A DBA cannot change the duration of the maintenance window after it is created.
In case of a long maintenance window,all Automated Maintenance Tasks are restarted every four hours.
A DBA can control the percentage of the resource allocated to the Automated Maintenance Tasks in each window
第3题:
It improves resync operations.
This feature enables much faster file opens.
It improves performance as fewer extent pointers are needed in the shared pool.
It improves performance by reading from a copy of an extent closest to the node.
第4题:
ADD DIRECTORY
DROP DISK
RESIZE DISK
REBALANCE
ADD FAILGROUP
第5题:
b, a, d, f
c, a, e, b, d, f, g
c, e, d, g
b, d, f
e, d, g
第6题:
RSTLNE
NLSRTL
LISTENER
NLSSORT
Linguistic sorts
第7题:
After two days,a backup will be marked obsolete
After two days,a backup will be deleted from the media
If the RMAN repository has records of two or more recent backups of a file,then older backups will be deleted from the media.
If the RMAN repository has records of two or more recent backups of a file then older backups will be marked obsolete.
第8题:
One
Two
Three
Four
Five
第9题:
to prevent the creation of an excessive number of scheduler job classes
to allow the Automated Maintenance Tasks to use system resources without any restriction
to allow resource sharing only among the Automated Maintenance Tasks in the maintenance window
to prevent the Automated Maintenance Tasks from consuming excessive amounts of system resources
第10题:
all disks in the disk group
all disks that are currently in OFFLINE mode
all disks that are not currently in OFFLINE mode
all disks in the disk group only if all of them are ONLINE