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单选题
The BOOKINGS table contains online booking information. When a booking is confirmed, the details are transferred to an archival table BOOKINGS_HIST and deleted from the BOOKINGS table. There is no fixed time interval between each online booking and its confirmation. Because sufficient space is not always available from the delete operations the high-water mark (HWM) is moved up and many rows are inserted below the HWM of the table. The BOOKINGS table has Automatic Segment Space Management (ASSM) and row movement enabled. The table is accessible in 24x7 mode. What is the most efficient method to reclaim the space released by the delete operations in the BOOKINGS table?()
A
Perform EXPORT, DROP, and IMPORT operations on the BOOKINGS table sequentially
B
Shrink the BOOKINGS table by using the ALTER TABLE SHRINK SPACE command
C
Move the BOOKINGS table to a different location by using the ALTER TABLE MOVE command
D
Deallocate the space in the BOOKINGS table by using the ALTER TABLE DEALLOCATE UNUSED command
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更多 “单选题The BOOKINGS table contains online booking information. When a booking is confirmed, the details are transferred to an archival table BOOKINGS_HIST and deleted from the BOOKINGS table. There is no fixed time interval between each online booking and its confirmation. Because sufficient space is not always available from the delete operations the high-water mark (HWM) is moved up and many rows are inserted below the HWM of the table. The BOOKINGS table has Automatic Segment Space Management (ASSM) and row movement enabled. The table is accessible in 24x7 mode. What is the most efficient method to reclaim the space released by the delete operations in the BOOKINGS table?()A Perform EXPORT, DROP, and IMPORT operations on the BOOKINGS table sequentiallyB Shrink the BOOKINGS table by using the ALTER TABLE SHRINK SPACE commandC Move the BOOKINGS table to a different location by using the ALTER TABLE MOVE commandD Deallocate the space in the BOOKINGS table by using the ALTER TABLE DEALLOCATE UNUSED command” 相关考题
考题
The walk-up rate at a hotel is the price charged to a customer who arrives without a reservation.It's usually about 30% less expensive than the online booking rate.()
此题为判断题(对,错)。
考题
Your are the DBA supporting an Oracle 11g Release 2 database and wish to move a table containing several DATE, CHAR, VARCHAR2, and NUMBER data types, and the table’s indexes, to another tablespace.The table does not have a primary key and is used by an OLTP application.Which technique will move the table and indexes while maintaining the highest level of availability to the application?()A. Oracle Data Pump.B. An ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD to move the indexes.C. An ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD ONLINE to move the indexes.D. Online Table Redefinition.E. Edition-Based Table Redefinition.
考题
Examine the following commands for redefining a table with Virtual Private Database (VPD) policies:Which two statements are true about redefining the table?()
A. All the triggers for the table are disabled without changing any of the column names or column types in the table.B. The primary key constraint on the EMPLOYEES table is disabled during redefinition.C. VPD policies are copied from the original table to the new table during online redefinition.D. You must copy the VPD policies manually from the original table to the new table during online redefinition.
考题
Which statement is correct about the forwarding table?()
A. The forwarding table is stored only on the PFEB. The forwarding table contains all known routesC. The forwarding table is stored on both the RE and PFED. The forwarding table is stored only on the RE
考题
A PL/SQL procedure queries only those columns of a redefined table that were unchanged by the online table redefinition. What happens to the PL/SQL procedure after the online table redefinition?()A、It remains valid.B、It becomes invalid for all options of online table redefinition but automatically gets revalidated the next time it is used.C、It becomes invalid for all options of online table redefinition and is automatically recompiled during online redefinition of the table.D、It becomes invalid only if the storage parameters have been modified and it automatically gets revalidated the next time it is used.
考题
Which statement is true about the routing table?()A、The routing table exists in the control plane onlyB、The routing table exists in the control plane and the forwarding planeC、The routing table contains both active and inactive routesD、The routing table is stored on compact flash
考题
pany has implemented numerous multilayer switches that utilize FIB tables. Which statement is true about the Forward Information Base (FIB) table?()A、 The FIB is derived from the IP routing table and is optimized for maximum lookup throughput. B、 The FIB table is derived from the Address Resolution Protocol table, and it contains Layer 2 rewrite (MAC) information for the next hop.C、 When the FIB table is full, a wildcard entry redirects traffic to the Layer 3 engine.D、 The FIB lookup is based on the Layer 2 destination MAC address.E、 None of the other alternatives apply
考题
Which statement is correct about the forwarding table?()A、The forwarding table is stored only on the PFEB、The forwarding table contains all known routesC、The forwarding table is stored on both the RE and PFED、The forwarding table is stored only on the RE
考题
In which scenario do you use the Flashback Database feature?()A、 when a table is dropped and you restore it from the Recycle BinB、 when a user’s schema is dropped and you recover the user’s schemaC、 when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestampD、 when a row of a table is updated frequently and committed, and you view all the versions of the row within a specific duration
考题
In which scenario will you perform a user-managed incomplete recovery?()A、 when a table is dropped and stored in the Recycle BinB、when a table is dropped and purged from the Recycle BinC、 when you are required to recover an existing table to its previous stateD、 when you are required to view all the versions of a row of an existing table between a specific time period
考题
You need to perform an online table redefinition of an existing SALES table to partition it into two tablespaces TBS1 and TBS2. The SALES table has a materialized view, materialized log, indexes, referential integrity constraint, and triggers with the PRECEDES clause existing on it. What action is required for dependent objects when you perform online table redefinition?() A、 The dependent materialized view should have a complete refresh performed after the online table redefinition process.B、 Triggers with the PRECEDES clause should be disabled before the online table redefinition process.C、 Referential integrity constraints must be manually enabled after the online table redefinition process.D、 The materialized log should be dropped before the online table redefinition process.
考题
In which scenario will you perform an incomplete recovery?()A、 when a table is dropped and stored in the Recycle BinB、 when all the control files are deletedC、 when a member of a multiplexed redo log group is droppedD、 when you are required to recover a table to its previous state
考题
In which scenario is a Database Administrator NOT required to perform an incomplete recovery?()A、 when all the online redo log groups are multiplexed and one of the members of a group is missingB、 when all the online redo log groups are not multiplexed and one log group is missingC、 when all the control files are missingD、 when some important tables are deleted from the database and purged from the Recycle Bin
考题
多选题Which three table transformations can be done using online redefinition of tables?()AABBCCDDEE
考题
单选题In which scenario do you use the Flashback Database feature?()A
when a table is dropped and you restore it from the Recycle BinB
when a user’s schema is dropped and you recover the user’s schemaC
when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestampD
when a row of a table is updated frequently and committed, and you view all the versions of the row within a specific duration
考题
单选题Which statement is true about the routing table?()A
The routing table exists in the control plane onlyB
The routing table exists in the control plane and the forwarding planeC
The routing table contains both active and inactive routesD
The routing table is stored on compact flash
考题
单选题You execute the following commands to audit database activities: SQL ALTER SYSTEM SET AUDIT_TRIAL=DB, EXTENDED SCOPE=SPFILE; SQL AUDIT SELECT TABLE, INSERT TABLE, DELETE TABLE BY JOHN By SESSION WHENEVER SUCCESSFUL; Which statement is true about the audit record that generated when auditing after instance restarts?()A
One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command on a table, and contains the SQL text for the SQL Statements.B
One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command, and contains the execution plan for the SQL statements.C
One audit record is created for the whole session if john successfully executes a SELECT, INSERT, or DELETE command, and contains the execution plan for the SQL statements.D
One audit record is created for the whole session if JOHN successfully executes a select command, and contains the SQL text and bind variables used.E
One audit record is created for the whole session if john successfully executes a SELECT, INSERT,or DELETE command on a table, and contains the execution plan, SQL text, and bind variables used.
考题
单选题The BOOKINGS table contains online booking information. When a booking is confirmed, the details are transferred to an archival table BOOKINGS_HIST and deleted from the BOOKINGS table. There is no fixed time interval between each online booking and its confirmation. Because sufficient space is not always available from the delete operations the high-water mark (HWM) is moved up and many rows are inserted below the HWM of the table. The BOOKINGS table has Automatic Segment Space Management (ASSM) and row movement enabled. The table is accessible in 24x7 mode. What is the most efficient method to reclaim the space released by the delete operations in the BOOKINGS table?()A
Perform EXPORT, DROP, and IMPORT operations on the BOOKINGS table sequentiallyB
Shrink the BOOKINGS table by using the ALTER TABLE SHRINK SPACE commandC
Move the BOOKINGS table to a different location by using the ALTER TABLE MOVE commandD
Deallocate the space in the BOOKINGS table by using the ALTER TABLE DEALLOCATE UNUSED command
考题
单选题A PL/SQL procedure queries only those columns of a redefined table that were unchanged by the online table redefinition. What happens to the PL/SQL procedure after the online table redefinition?()A
It remains valid.B
It becomes invalid for all options of online table redefinition but automatically gets revalidated the next time it is used.C
It becomes invalid for all options of online table redefinition and is automatically recompiled during online redefinition of the table.D
It becomes invalid only if the storage parameters have been modified and it automatically gets revalidated the next time it is used.
考题
单选题You need to perform an online table redefinition of an existing SALES table to partition it into two tablespaces TBS1 and TBS2. The SALES table has a materialized view, materialized log, indexes, referential integrity constraint, and triggers with the PRECEDES clause existing on it. What action is required for dependent objects when you perform online table redefinition?()A
The dependent materialized view should have a complete refresh performed after the online table redefinition process.B
Triggers with the PRECEDES clause should be disabled before the online table redefinition process.C
Referential integrity constraints must be manually enabled after the online table redefinition process.D
The materialized log should be dropped before the online table redefinition process.
考题
单选题An index-organized table (IOT) called SPARSE has had many records deleted. Which command reorganizes the IOT so that the empty space is removed, while minimizing the impact for users?()A
EXPORT with TABLES and IMPORT with the INDEX and IGNORE options.B
ALTER TABLE … COALESCE ;C
ALTER INDEX …REBUILD ONLINE;D
CREATE TABLE …AS SELECT_ONLINE;
考题
单选题The ADMIN_EMP table has columns EMPNO, ENAME, DEPTNO, and SAL. It has a materialized view EMP_MV with a materialized log and an ENAME_IDX index on the ENAME column. You need to perform an online table redefinition on the ADMIN_EMP table to move it from the TBS1 tablespace to the TBS2 tablespace in the same schema. What action is required for the dependent objects when you perform online redefinition on the table?()A
The materialized view should have a complete refresh performed after the online table redefinition is completed.B
The materialized view should have a fast refresh performed after the online table redefinition is completed.C
The materialized view,materialized log,and the index should be dropped and re-created after the online table redefinition is complete.D
The materialized view and materialized log should be dropped and all constraints disabled and re-created after the online table redefinition is complete.
考题
单选题In which scenario will you perform a user-managed incomplete recovery?()A
when a table is dropped and stored in the Recycle BinB
when a table is dropped and purged from the Recycle BinC
when you are required to recover an existing table to its previous stateD
when you are required to view all the versions of a row of an existing table between a specific time period
考题
多选题Examine this command: SQL exec DBMS_STATS.SET_TABLE_PREFS (‘SH’, ‘CUSTOMERS’, ‘PUBLISH’, ‘false’); Which three statements are true about the effect of this command?()AStatistics collection is not done for the CUSTOMERS table when schema stats are gathered.BStatistics collection is not done for the CUSTOMERS table when database stats are gathered.CAny existing statistics for the CUSTOMERS table are still available to the optimizer at parse time.DStatistics gathered on the CUSTOMERS table when schema stats are gathered are stored as pending statistics.EStatistics gathered on the CUSTOMERS table when database stats are gathered are stored as pending statistics.
考题
单选题Examine the following command: SQL ALTER TABLE booking SHRINK SPACE COMPACT; Which activity is performed when the preceding command is executed?()A
The shrink operation touches every block in the BOOKING tableB
The high-water mark (HWM) for the BOOKING table is shifted from its original positionC
The progress of the shrink operation is saved in the bitmap blocks of the BOOKING tableD
The data manipulation language (DML) triggers on the BOOKING table are executed because the shrink operation is internally handled by the INSERT/DELETE operation
考题
单选题Your database is running in NOARCHIVELOG mode with two online redo log files. The SALES table contains sales information for the organization. The SALES table belongs to the SALESTB tablespace. On Monday, you insert 10 rows into the SALES table. The current log sequence number is 14. You change the tablespace status from READ WRITE to READ ONLY for the SALESTB tablespace. You shut down the database and take a backup of the SALESTB tablespace. On Tuesday, you start the database. You change the status for the SALESTB tablespace from READ ONLY to READ WRITE. You insert 10 more rows into the SALES table and shut down the database. The current log sequence number is 15. When you try to open the database on Wednesday morning, you discover that the SALESTB tablespace was lost because of a media failure. Which of the following options is true about recovering the SALES table?()A
The SALES table cannot be recovered because the database is running in NOARCHIVELOG mode.B
The SALES table can be recovered by restoring the SALESTB tablespace from the backup and performing a media recovery.C
The SALES table can be recovered by restoring the SALESTB tablespace from the backup without performing any media recovery.D
The SALES table can be recovered by restoring the SALESTB tablespace from the backup, but the rows inserted on Tuesday need to be inserted again.
考题
单选题Examine the following command: SQL ALTER TABLE booking SHRINK SPACE COMPACT; Which activity is performed when the preceding command is executed?()A
The shrink operation touches every block in the BOOKING tableB
The high-water mark (HWM) for the BOOKING table is shifted from its original positionC
The progress of the shrink operation is saved in the bitmap blocks of the BOOKING tableD
The data manipulation language (DML) triggers on the BOOKING table are executed because the shrink operation is internally handled by the INSERT/DELETE operation
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