1Z0-048 무료 덤프문제 온라인 액세스

View the Exhibit.
Users complain about the performance of an Oracle database-based application. You are requested to investigate. From Grid Control, you immediately infer that one of the cluster database instances is currently unavailable. You also notice that the host where the instance belongs was recently rebooted due to an unknown reason.
Using Grid Control, you restart the instance and performance rapidly improves. You want to determine the cause of the instance startup failure after the system reboot, and you check the resource profiles on both the database and ASM instances involved.
Why was the instance not started by CRS?

• A.The instance was started by CRS after the system was rebooted, but someone stopped it from within SQL*Plus.
• B.The instance could not be started by CRS because this instance depends on an ASM instance, which has its autostart attribute set to a value, thereby preventing CRS from starting this ASM instance after a system reboot.
• C.The instance was not started by CRS because its target state was set to "offline" before the system was rebooted.
• D.The instance was started by CRS but due to multiple instance failures CRS disabled the database instance, thereby preventing further restarts.
• E.The database instance's autostart attribute indicates that CRS should not restart it after system boot.

Which three statements are correct regarding ASM instances in a RAC environment? (Choose three.)

• A.ASM instances can mount different sets of disk groups.
• B.ASM instances recognize their disks by looking at their headers.
• C.ASM instances must all have the same value for ASM DISKGROUPS.
• D.ASM instances must all have the same value for ASM_DISKSTRING.
• E.ASM instances can use different values for ASM_POWER_LIMIT.

Your company requires that certain database systems be made continuously available because there are revenue-earning applications using Oracle databases. You already use RAC; it is a requirement for the applications to have continuous read and write access to all schema objects in the database during routine DBA maintenance activities. Which three technologies would you recommend for minimizing planned downtime for the application caused by unavailability of data due to those activities? (Choose three.)

• A.Rolling Release Upgrades
• B.Bigfile Tablespaces
• C.Online Table Redefinition
• D.Hardware-Assisted Resilient Data
• E.Online Index Rebuild
• F.Fast Start Fault Recovery

Which optional parameter of the DESCRIPTION clause of a TNS entry can you use to make sure that another protocol address is tried if the first one fails?

• A.TYPE OF SERVICE
• B.SOURCE_ROUTE
• C.LOAD_BALANCE
• D.FAILOVER

Read the following statements about a file system:
1) It is compatible with Oracle 9i and Oracle 10g.
2) It is one of the solutions for managing Oracle binaries in a RAC environment.
3) It relies on storage hardware or host-based RAID functionality to support high availability.
4) It is a shared storage file system designed in such a way that you can avoid setting up of raw
partitions to store certain files.
Which file system corresponds to these features?

• A.NFS
• B.OCFS2
• C.ext2
• D.ASM
• E.NTFS