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2021 Jun 1Z0-053 Study Guide Questions:
Q441. Which of the following Oracle features utilize the undo tablespace? (Choose all that apply)
A. Flashback Query
B. Flashback Drop
C. Flashback Table
D. Flashback Database
E. Transaction Processing
F. Recycle Bin
Q442. You executed the following command in Recovery Manager (RMAN):
RMAN> REPORT NEED BACKUP days 3;
What is the output of this command?
A. a list of files that require a backup within three days
B. a list of files requiring more than 3 days of archive logs to apply
C. a list of files that RMAN recommends be backed up only once in every three days, based on low volatility
D. a list of files for which a backup has already been performed in the last three days and which is required to be backed up again based on the high number of transactions performed on them
Q443. Which statement is true about a running session that belongs to the online transaction processing (OLTP) group?
A. It permanently switches to the low_group consumer group if the session exceeds 10,000 I/O requests or 2,500 MB of data transfer.
B. It performs the first 10000 I/O requests or 2,500 MB of data transfer in the LOW-GROUP consumer group, and then switches to the original group.
C. It switches to the LOW_GROUP consumer group if the session exceeds 10000 I/O requests or 2500 MB of data transfer and returns to the original group after the operation.
D. It switches to the LOW_GROUP consumer group if the session exceeds 10000 I/O requests or 2500 MB of data transfer for queries, but not for data manipulation language (DML) operations.
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Q444. Which of the following statements is true regarding the initialization parameter DIAGNOSTIC_DEST?
A. The default value is the value of the environment variable $ORACLE_HOME; if $ORACLE_HOME isn't set, then the default is set to $ORACLE_BASE.
B. The default value is the value of the environment variable $ORACLE_BASE; if $ORACLE_BASE isn't set, then it is set to $ORACLE_HOME.
C. DIAGNOSTIC_DEST is always equal to $ORACLE_HOME.
D. DIAGNOSTIC_DEST is always equal to $ORACLE_BASE.
Q445. What RMAN command must you use before you can back up a database using the recovery catalog?
A. create catalog
B. install database
C. catalog database
D. merge Catalog with database
E. register database
Q446. You issued the following RMAN command to back up the database:
ALLOCATE CHANNEL c1
DEVICE TYPE sbt
RESTORE POINT FY06Q4;}
Which two statements are true regarding the backup performed? (Choose two.)
A. Archived redo log files are backed up along with data files.
B. Only data files are backed up and a restore point named FY06Q4 is created.
C. Archived log files are backed up along with data files, and the archived log files are deleted.
D. The command creates a restore point named FY06Q4 to match the SCN at which this backup is consistent.
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Q447. In what state are the datafiles of a tablespace after a TSPITR has been successfully completed?
A. The datafiles have an ONLINE status.
B. The datafiles have an OFFLINE status.
C. The datafiles have an ONLINE status and are in hot backup mode prepared for an online backup.
D. The datafiles have an OFFLINE status and are in hot backup mode for an online backup.
E. The datafiles are in STANDBY mode.
Q448. You are managing an Oracle Database 11g instance with ASM storage. You lost an ASM disk group DATA. You have RMAN backup of data as well as ASM metadata backup.
You want to re-create the missing disk group by using the ASMCMD md_restore command. Which of these methods would you use to achieve this? (Choose all that apply.)
A. Restore the disk group with the exact configuration as the backed-up disk group, using the same disk group name, same set of disks, failure group configurations, and data on the disk group.
B. Restore the disk group with the exact configuration as the backed-up disk group, using the same disk group name, same set of disks, and failure group configurations.
C. Restore the disk group with changed disk group specification, failure group specification, disk group name, and other disk attributes.
D. Restore metadata in an existing disk group by passing the existing disk group name as an input parameter.
Q449. Which two statements regarding the Flashback Table feature are correct? (Choose two.)
A. Flashback Table can be performed on system tables.
B. Flashback Table operation does not shrink the segments.
C. Flashback Table uses log mining to extract SQL_REDO and SQL_UNDO statements.
D. Flashback Table operation acquires exclusive data manipulation language (DML) locks.
Q450. Your database is running In ARCIIIVELOG mode. One of the data files, USBRDATAOI. DBF, in the users tablespace is damaged and you need to recover the file until the point of failure. The backup for the data file is available.
Which three files would be used in the user-managed recovery process performed by the database administrator (DBA)? (Choose three.)
A. redo logs
B. control file
C. temporary files of temporary tablespace
D. the latest backup of only the damaged data file
E. the latest backup of all the data files In the USERS tablespace