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单选题
The UNDO_RETENTION parameter in your database is set to 1000 and undo retention is not guaranteed. Which statement regarding retention of undo data is correct？（）
A
Undo data becomes obsolete after 1，000 seconds.
B
Undo data gets refreshed after every 1，000 seconds.
C
Undo data will be stored permanently after 1，000 seconds.
D
Committed undo data would be retained for 1，000 seconds if free undo space is available.
E
Undo data will be retained in the UNDO tablespace for 1，000 seconds，then it gets moved to the TEMPORARY tablespace to provide read consistency.
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更多 “单选题The UNDO_RETENTION parameter in your database is set to 1000 and undo retention is not guaranteed. Which statement regarding retention of undo data is correct？（）A Undo data becomes obsolete after 1，000 seconds.B Undo data gets refreshed after every 1，000 seconds.C Undo data will be stored permanently after 1，000 seconds.D Committed undo data would be retained for 1，000 seconds if free undo space is available.E Undo data will be retained in the UNDO tablespace for 1，000 seconds，then it gets moved to the TEMPORARY tablespace to provide read consistency.” 相关考题
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You want to enable automatic PGA memory management in your database. Which setting is required to achieve this?()
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You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（） A、 The database will not start.B、 The database will start but will not retain the undo data in the undo segment.C、 The database will start， and the undo segment will contain the undo data for at least one hour.D、 The database will start， and the undo segment will retain the undo data for at least 15 minutes.
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考题
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考题
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考题
You work as a database administrator for Certkiller .com. The UNDO_RETENTION parameter in your database is set to 1000 and undoretention is not guaranteed. Which statement regarding retention of undo data is correct？（）A、Undo data becomes obsolete after 1，000 seconds.B、Undo data gets refreshed after 1，000 seconds.C、Undo data will be stored permanently after 1，000 seconds.D、Committed undo data would be retained for 1，000 seconds if free undo space is available.E、Undo data will be retained in the UNDOtablespacefor 1，000 seconds， then it gets movedmovedto the TEMPORARYtablespaceto provide read consistency.
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考题
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考题
You want to enable automatic PGA memory management in your database. Which setting is required to achieve this？（）A、 Set MEMORY_TARGET to zeroB、 Set the STATISTICS_LEVEL parameter to BASICC、 Set the WORKAREA_SIZE_POLICY parameter to MANUALD、 Set the PGA_AGGREGATE_TARGET parameter to nonzero value
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多选题You work as a database administrator for Certkiller .com. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）ASet the UNDO_RETENTION parameter to AUTO.BCreate an initial undo segment in undotablespace.CSet the UNDO_RETENTION parameter to 900 or moreDSet the initialization parameter UNDO_MANAGEMENT to AUTOESet the UNDO_MANAGEMENT parameter to the name of an undotablespace
考题
多选题Which three pieces of information are considered while deciding the size of the undo tablespace in your database？（）Athe size of an undo blockBthe size of the redo log filesCundo blocks generated per secondDthe size of the database buffer cacheEthe value of the UNDO_RETENTION parameter
考题
单选题You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DBA. While observing the server settings， you find that the following parameter has been set in the parameter file of the database： REMOTE_OS_AUTHENT = TRUE What could have been the reason to set this parameter as TRUE？（）A
to enable operating system authentication for a remote clientB
to restrict the scope of administration to identical operating systemsC
to allow the start up and shut down of the database from a remote clientD
to enable the administration of the operating system from a remote clientE
to disable the administration of the operating system from a remote client
考题
单选题Your database is started by using the server parameter file （SPFILE）. You issued this command to change the value of the LOG_BUFFER initialization parameter： ALTER SYSTEM SET LOG_BUFFER=24M SCOPE=BOTH； What would be the outcome of this command？ （）A
The command would return an error because LOG_BUFFER is a static parameter.B
The parameter value would be changed and it would come into effect immediately.C
You need to restart the database so that parameter changes can come into effect.D
The command would succeed only if initialization parameter LOG_ARCHIVE_MAX_PROCESS is set to value 2.
考题
多选题The EMP table exists in your schema. You want to execute the following query： SELECT ename， sal FROM emp AS OF TIMESTAMP （SYSTIMESTAMP - INTERVAL ’6’ MINUTE） WHERE ename = ’ALLEN’； What are the minimum requirements for the statement to execute successfully？（）AARCHIVELOG mode must be enabledBRow Movement must be enabled for the tableCFLASHBACK must be set to ON for the databaseDThe UNDO_MANAGEMENT parameter must be set to AUTOEThe UNDO_RETENTION parameter must be set appropriately
考题
单选题You want to enable automatic PGA memory management in your database. Which setting is required to achieve this？（）A
Set MEMORY_TARGET to zeroB
Set the STATISTICS_LEVEL parameter to BASICC
Set the WORKAREA_SIZE_POLICY parameter to MANUALD
Set the PGA_AGGREGATE_TARGET parameter to nonzero value
考题
单选题You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（）A
The database will not start.B
The database will start but will not retain the undo data in the undo segment.C
The database will start， and the undo segment will contain the undo data for at least one hour.D
The database will start， and the undo segment will retain the undo data for at least 15 minutes.
考题
单选题You have the following requirements in relation to the detection of block corruption for your database instance： Check for logical self-consistency of data blocks when modified in memory. Checksums are calculated before and after the block change. Checks are performed for the lost writes to the physical standby database. Which method would help you perform the above checks automatically？（）A
Set the DB_SECUREFILE parameter to PERMITTEDB
Set the DB_ULTRA_SAFE parameter to DATA_ONLYC
Set the DB_LOCK_CHECKSUM parameter to TYPICALD
Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL
考题
单选题Every Sunday the Unix system administrator has a job that executes a full backup of the entire Unix system your database is on. Is this backup usable for backup and recovery of your database？（）A
Yes， if the database is in ARCHIVELOG modeB
Yes， if the database is in NOARCHIVELOG modeC
No， the backup is not usable in any wayD
Only if the ENABLE_ONLINE_BACKUP parameter is set to TRUE
考题
单选题In your database， the RESULT_CACHE_MODE parameter has been set to MANUAL in the initialization parameter file. You issued the following command： SQLSELECT /*+ RESULT_CACHE */ sale_category， sum（sale_amt） FROM sales GROUP BY sale_category； Where would the result of this query be stored（）？A
database buffer cacheB
shared poolC
PGAD
large pool
考题
单选题You work as a database administrator for Certkiller .com. The UNDO_RETENTION parameter in your database is set to 1000 and undoretention is not guaranteed. Which statement regarding retention of undo data is correct？（）A
Undo data becomes obsolete after 1，000 seconds.B
Undo data gets refreshed after 1，000 seconds.C
Undo data will be stored permanently after 1，000 seconds.D
Committed undo data would be retained for 1，000 seconds if free undo space is available.E
Undo data will be retained in the UNDOtablespacefor 1，000 seconds， then it gets movedmovedto the TEMPORARYtablespaceto provide read consistency.
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