Here you have the best Oracle 1z0-067 practice exam questions
A complete database backup to media is taken for your database every day. Which three actions would you take to improve backup performance?
To improve backup performance, setting the backup_tape_io_slaves parameter to true can help by utilizing multiple I/O slaves for tape backups, which enhances throughput. Configuring the large pool if not already done is beneficial because it provides a dedicated memory area for backup and restore operations, improving performance by reducing contention for the shared pool. Removing the rate parameter in the allocate channel command, if specified, can also improve backup performance by allowing RMAN to use the maximum available bandwidth without artificially limiting the rate of data transfer.
For which three pieces of information can you use the RMAN list command?
The RMAN list command can be used to list stored scripts in the recovery catalog, available archived redo log files, and backups of tablespaces. The list command provides information about the stored scripts, which are an integral part of the recovery catalog. It also provides details on archived redo logs, which are crucial for recovery operations. Additionally, it includes information about backups of tablespaces, which are necessary for restoring data. Backup sets and image copies that are obsolete (Option C) and backups that are marked obsolete according to the current retention policy (Option E) are generally managed by other commands such as REPORT OBSOLETE.
Which three statements are true about a job chain?
A job chain can contain a nested chain of jobs, allowing complex workflows to be constructed. It can be used to implement dependency-based scheduling, where jobs are executed based on the completion of other jobs. Additionally, it can be executed using event-based or time-based schedules, providing flexibility in how and when the job chain is triggered.
Because of logical corruption of data in a table, you want to recover the table from an RMAN backup to a specified point in time.
Examine the steps to recover this table from an RMAN backup:
1.Determine which backup contains the table that needs to be recovered.
2.Issue the recover table RMAN command with an auxiliary destination defined and the point in time specified.
3.Import the Data Pump export dump file into the auxiliary instance.
4.Create a Data Pump export dump file that contains the recovered table on a target database.
Identify the required steps in the correct order.
To recover a table from an RMAN backup to a specified point in time due to logical corruption, you need to determine the backup containing the table, issue the recover table RMAN command with the appropriate parameters, and then create a Data Pump export dump file for the recovered table. Step 1 is necessary to identify the correct backup, step 2 involves using the RMAN recover table command with the auxiliary destination and specified recovery time, and step 4 allows for the creation of the dump file on the target database. Importing the Data Pump export dump file into the auxiliary instance (step 3) is not required in this process. Hence, the correct sequence is 1, 2, 4.
Examine the command:
SQL> RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL;
In which two scenarios is this command required?
The command 'RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL;' is used in scenarios where the current state of the control file is unreliable or missing, requiring the use of a backup control file to proceed with recovery. One common scenario is when the current online redo log file is missing, making it necessary to use a backup control file (Option A). Another scenario is when the database backup is older than the control file backup, necessitating this command to ensure consistency during the recovery process (Option D).