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NEW QUESTION 1
The database Is configured in ARCHIVELOG mode. The database needs to be up 24 X 7. You want to perform user managed backup for the data files of the HR_DATA tablespace. To accomplish the task, you issued the following command:
SQL> ALTER TABLESPACE hr_data BEGIN BACKUP;
Which two statements are true in this scenario? (Choose two.)
Answer: CD
Explanation: Making User-Managed Backups of Online Read/Write Tablespaces
You must put a read/write tablespace in backup mode to make user-managed data file backups when the tablespace is online and the database is open. The ALTER TABLESPACE ... BEGIN BACKUP statement places a tablespace in backup mode. In backup mode, the database copies whole changed data blocks into the redo stream. After you take the tablespace out of backup mode with the ALTER TABLESPACE ... END BACKUP or ALTER DATABASE END BACKUP statement, the database advances the data file checkpoint SCN to the current database checkpoint SCN.
When restoring a data file backed up in this way, the database asks for the appropriate set of redo log files to apply if recovery is needed. The redo logs contain all changes required to recover the data files and make them consistent.
NEW QUESTION 2
In your production database, users report that they are unable to generate reports on an important table because it does not contain any data. While investigating the reason, you realize that another user executed the TRUNCATE TABLE command, which accidentally
caused the data to be lost. Now you want to recover the lost data of the table without affecting objects in other schemas.
Which method must you use to recover the lost data?
Answer: C
NEW QUESTION 3
You enable block change tracking. You issue the following command: BACKUP INCREMENTAL LEVEL 0 DATABASE;
The next day, you issue the following command:
BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;
Which statement about the use of the change tracking file is true?
Answer: C
NEW QUESTION 4
What are the different logging modes available in Oracle Database 11g? (Choose two.)
Answer: BE
NEW QUESTION 5
How many individual archive-log destination directories are supported by Oracle Database11g?
Answer: C
NEW QUESTION 6
Which of the following is not a valid setting for the PROGRAM_TYPE parameter in a program object or the JOB_TYPE parameter in a job object?
Answer: B
Explanation: job_type
Job action type ('PLSQL_BLOCK', 'STORED_PROCEDURE', 'EXECUTABLE', or 'CHAIN')
NEW QUESTION 7
You perform a backup using the following BACKUP command: RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE;
Which statement is true of this command?
Answer: C
NEW QUESTION 8
If you lost your entire database, including the database spfile, control files, online redo logs, and database datafiles, what kind of recovery would be required with RMAN?
Answer: B
NEW QUESTION 9
You want to configure the Flashback Database feature and retain flashback logs for three days.
Presently the database is open and configured in ARCHIVELOG mode. The following steps must be performed in the correct sequence to do this:
1. Set the retention target:
SQL> ALTER SYSTEM SET DB_FLASHBACK_RETENTION_TARGET=4320;
2. Enable Flashback Database:
SQL> ALTER DATABASE FLASHBACK ON;
3. Mount the database:
SQL> STARTUP MOUNT EXCLUSIVE
4. Shutdown the instance:
SQL> SHUTDOWN IMMEDIATE
5. Open the database:
SQL> ALTER DATABASE OPEN;
Choose the correct sequence.
Answer: B
NEW QUESTION 10
The OPTIMIZER_USE_PLAN_BASELINES parameter is set to TRUE. The optimizer generates a plan for a SQL statement but does not find a matching plan in the SQL plan baseline.
Which two operations are performed by the optimizer in this scenario? (Choose two.)
Answer: AE
Explanation: 15.2.2 Selecting SQL Plan Baselines
During the SQL plan baseline selection phase, Oracle Database detects plan changes based on the stored plan history, and selects plans to avoid potential performance regressions for a set of SQL statements.
Each time the database compiles a SQL statement, the optimizer does the following:
1. Uses a cost-based search method to build a best-cost plan
2. Tries to find a matching plan in the SQL plan baseline
3. Does either of the following depending on whether a match is found:
✑ If found, then the optimizer proceeds using the matched plan
✑ If not found, then the optimizer evaluates the cost of each accepted plan in the SQL plan baseline and selects the plan with the lowest cost
The best-cost plan found by the optimizer that does not match any plans in the plan history for the SQL statement represents a new plan. The database adds this plan as a nonaccepted plan to the plan history. The database does not use the new plan until it is verified to not cause a performance regression. However, if a change in the system (such as a dropped index) causes all accepted plans to become non-reproducible, then the optimizer selects the best-cost plan. Thus, the presence of a SQL plan baseline causes the optimizer to use conservative plan selection strategy for the SQL statement.
To enable the use of SQL plan baselines, set the OPTIMIZER_USE_SQL_PLAN_BASELINES initialization parameter to TRUE (default). A SQL plan baseline contains one or more accepted plans.
The plan history is the set of plans, both accepted and not accepted, that the optimizer generates for a SQL statement over time, the plans in the baseline form a subset of the plan history. For example, after the optimizer generates the first acceptable plan for a SQL plan baseline, subsequent plans are part of the plan history but not part of the plan baseline.
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NEW QUESTION 11
View the Exhibit to examine the details for an incident. Which statement is true regarding the status of the incident?
Exhibit:
Answer: D
NEW QUESTION 12
Which are the prerequisites for performing flashback transactions on your database? (Choose all that apply.)
Answer: BCD
NEW QUESTION 13
Which command do you use to create a recovery-catalog schema?
Answer: B
Explanation: Use the CREATE CATALOG command to create a recovery catalog.
The recovery catalog can be a base recovery catalog or a virtual private catalog.
✑ A base recovery catalog is a database schema that contains RMAN metadata for a set of target databases.
✑ A virtual private catalog is a set of synonyms and views that enable user access to
a subset of a base recovery catalog.
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NEW QUESTION 14
You run the following commands:
RMAN> list expired backup; RMAN> delete expired backup;
What will happen to the backup set pieces associated with the backups that appear in the list expired backup command?
Answer: B
NEW QUESTION 15
You have lost all your online redo logs. As a result, your database has crashed. You have tried to restart the database and clear the online redo log files, but when you try to open the database you get the following error.
SQL> startup
ORACLE instance started.
Total System Global Area 167395328 bytes Fixed Size 1298612 bytes
Variable Size 142610252 bytes Database Buffers 20971520 bytes Redo Buffers 2514944 bytes Database mounted.
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/oracle01/oradata/orcl/redo02a.log'
ORA-27037: unable to obtain file status Linux Error: 2: No such file or directory Additional information: 3
ORA-00312: online log 2 thread 1: '/oracle01/oradata/orcl/redo02.log'
ORA-27037: unable to obtain file status Linux Error: 2: No such file or directory Additional information: 3
SQL> alter database clear logfile group 2;
alter database clear logfile group 2 * ERROR at line 1:
ORA-01624: log 2 needed for crash recovery of instance orcl (thread 1) ORA-00312: online log 2 thread 1: '/oracle01/oradata/orcl/redo02.log' ORA-00312: online log 2 thread 1: '/oracle01/oradata/orcl/redo02a.log'
What steps must you take to resolve the error?
a: Issue the recover database redo logs command.
b: Issue the Startup Mount command to mount the database. c: Restore the last full database backup.
d: Perform a point-in-time recovery, applying all archived redo logs that are available.
e: Restore all archived redo logs generated during and after the last full database backup. f: Open the database using the alter database open resetlogs command.
g: Issue the alter database open command.
Answer: E
Explanation: If the online redo log is in ACTIVE or CURRENT status, you cannot issue CLEAR LOGFILE GROUP n command, it occurs ORA-01624 error.
The option (a) is invalid, there is NO such recover database redo log command, so that the answer must be (c, e, b, d, f).
It applies an incomplete recovery, then open database with RESETLOGS option.
NEW QUESTION 16
Which statement is true regarding virtual private catalogs?
Answer: D
NEW QUESTION 17
Every resource plan must contain an allocation to which consumer group?
Answer: E
NEW QUESTION 18
What is the impact of the following backup if it exceeds the duration allowance? backup as compressed backupset duration 2:00 partial minimize load database ;
Answer: B
NEW QUESTION 19
To reference existing ASM files, you need to use a fully qualified ASM filename. Your development database has a disk group named DG2A, the database name is DEV19, and the ASM file that you want to reference is a datafile for the USERS02 tablespace.
Which of the following is a valid ASM filename for this ASM file?
Answer: B
Explanation: Fully Qualified File Name Form (link)
A fully qualified file name has the following form:
+diskgroup/dbname/filetype/filetypetag.file.incarnation Where:
+diskgroup is the disk group name preceded by a plus sign. You can think of the plus sign (+) as the root directory of the Oracle ASM file system, similar to the slash (/) on UNIX or Linux computers.
dbname is the DB_UNIQUE_NAME of the database to which the file belongs. filetype is the Oracle file type and can be one of the file types shown in Table 7-3.
filetypetag is type-specific information about the file and can be one of the tags shown in Table 7-3.
file.incarnation is the file/incarnation pair, used to ensure uniqueness. For example,
filetype = 'DATAFILE', Data files and data file copies
filetypetag = 'tblspname', Name of the tablespace into which the file is added
NEW QUESTION 20
Which statement about the enabling of table compression in Oracle Database 11g is true?
Answer: D
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