What are three benefits of performing data definition language （DDL） statements against a partitioned table with the UPDATE GLOBAL INDEXES clause？（）A、Global indexes are rebuilt automatically at the end of the DDL operation thereby avoiding problems with the UNUSABLE status. B、You do not have to search for invalid global indexes after the DDL command completes and rebuild them individually. C、Global indexes are maintained during the operation of the DDL command and therefore can be used by any concurrent query. D、Global indexes remain intact and available for use by data manipulation language （DML） statements even for sessions that have not enabled the skipping of unusable indexes.
What are three benefits of performing data definition language （DDL） statements against a partitioned table with the UPDATE GLOBAL INDEXES clause？（）
- A、Global indexes are rebuilt automatically at the end of the DDL operation thereby avoiding problems with the UNUSABLE status.
- B、You do not have to search for invalid global indexes after the DDL command completes and rebuild them individually.
- C、Global indexes are maintained during the operation of the DDL command and therefore can be used by any concurrent query.
- D、Global indexes remain intact and available for use by data manipulation language （DML） statements even for sessions that have not enabled the skipping of unusable indexes.
相关考题：
The RECYCLEBIN parameter is set to ON for your database. You drop a table, PRODUCTS, from the SCOTT schema.Which two statements are true regarding the outcome of this action?() A. All the related indexes and views are automatically droppedB. The flashback drop feature can recover only the table structureC. Only the related indexes are dropped whereas views are invalidatedD. The flashback drop feature can recover both the table structure and its data
Which of the following statements is true regarding the VERSIONS BETWEEN clause？（） A、 The VERSIONS BETWEEN clause may be used in DML statements.B、 The VERSIONS BETWEEN clause may be used in DDL statements.C、 The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.D、 The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.
Which is a restriction on a list partitioned table？（）A、You cannot create global range partitioned indexes on the table. B、The optimizer will not execute partition wise joins on the table’s partitions. C、You must include at least one element in the value list of each partition of the table, even if that element is the keyword NULL. D、Partition pruning will not occur during query optimizer if a range of values is included in the query predicate.
Examine the following command:ALTER SYSTEM SET enable_ddl_logging=FALSE;Which statement is true?（）A、None of the data definition language (DDL) statements are logged in the trace file.B、Only DDL commands that resulted in errors are logged in the alert log file.C、A new log.xml file that contains the DDL statements is created, and the DDL command details are removed from the alert log file.D、Only DDL commands that resulted in the creation of new database files are logged.
The RECYCLEBIN parameter is set to ON for your database. You drop a table, PRODUCTS, from the SCOTT schema. Which two statements are true regarding the outcome of this action? （）(Choose two)A、All the related indexes and views are automatically droppedB、The flashback drop feature can recover only the table structureC、Only the related indexes are dropped whereas views are invalidatedD、The flashback drop feature can recover both the table structure and its data
Examine the following command; ALTER SYSTEM SET enable_ddl_logging = TRUE; Which statement is true?（）A、Only the data definition language (DDL) commands that resulted in errors are logged in the alert log file.B、All DDL commands are logged in the alert log file.C、All DDL commands are logged in a different log file that contains DDL statements and their execution dates.D、Only DDL commands that resulted in the creation of new segments are logged.E、All DDL commands are logged in XML format in the alert directory under the Automatic Diagnostic Repository (ADR) home.
Identify the logical structure that will never have more than one data segment created for it.（）A、external tableB、partitioned tableC、partitioned indexD、nonclustered tableE、global temporary table
Which statements are correct regarding indexes？ （）A、 When a table is dropped， the corresponding indexes are automatically dropped.B、 For each DML operation performed， the corresponding indexes are automatically updated.C、 Indexes should be created on columns that are frequently referenced as part of an expression.D、 A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically creates a uniqueindex.
In order to exploit some new storage tiers that have been provisioned by a storage administrator, the partitions of a large heap table must be moved to other tablespaces in your Oracle 12c database? Both local and global partitioned B-tree Indexes are defined on the table. A high volume of transactions access the table during the day and a medium volume of transactions access it at night and during weekends. Minimal disrupt ion to availability is required. Which three statements are true about this requirement?（）A、The partitions can be moved online to new tablespaces.B、Global indexes must be rebuilt manually after moving the partitions.C、The partitions can be compressed in the same tablespaces.D、The partitions can be compressed in the new tablespaces.E、Local indexes must be rebuilt manually after moving the partitions.
Which statement is true regarding online redefinition for the migration of BasicFile LOBs to SecureFile LOBs?（）A、It cannot be done in parallel.B、It can be done at the table level or partition level.C、It does not require additional storage because the operation is done online.D、Local and global indexes are maintained automatically during the operation.
The RECYCLEBIN parameter is set to ON for your database. You drop a table，PRODUCTS，from the SCOTT schema. Which two statements are true regarding the outcome of this action？（）A、 All the related indexes and views are automatically droppedB、 The flashback drop feature can recover only the table structureC、 Only the related indexes are dropped whereas views are invalidatedD、 The flashback drop feature can recover both the table structure and its data
User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， or any data definition language （DDL） command： SQL SELECT ename FROM emp 2 WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations wouldwait when issued in SCOTT’s second session（）A、LOCK TABLE emp IN SHARE MODE；B、LOCK TABLE emp IN EXCLUSIVE MODE；C、UPDATE emp SET sal=sal*1.2 WHERE job=MANAGER；D、INSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；E、SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno；
User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， orany data definition language （DDL） command： SQL SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations would waitwhen issued in SCOTT’s second session（）A、LOCK TABLE emp IN SHARE MODE；B、LOCK TABLE emp IN EXCLUSIVE MODE；C、UPDATE emp SET sal=sal*1.2 WHERE job=ANAGER？UPDATE emp SET sal=sal*1.2 WHERE job=？ANAGER？D、INSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；E、SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno
Which three statements are correct about temporary tables？（）A、Indexes and views can be created on temporary tables.B、Both the data and the structure of temporary tables can be exported.C、Temporary tables are always created in a user’s temporary tablespace.D、The data inserted into a temporary table in a session is available to other sessions.E、Data manipulation language （DML） locks are never acquired on the data of temporary tables.
Which parameter allows SQL*Loader to load data into a table with the indexes in the unusable state， prior to the load operation？（）A、INDEXESB、SKIP_INDEXES_MAINTENANCEC、SKIP_UNUSABLE_INDEXESD、RESUMABLEE、INDEXES_UNUSABLE
You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario?（）A、The EMPLOYEES table will be changed to read-only mode during the shrink operation.B、The indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is over.C、The shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation.D、Data manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operation.
User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK，or any data definition language （DDL） command： SQL SELECT job FROM emp 2 WHERE job=’CLERK’ FOR UPDATE OF empno; SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT’s second session？（）A、LOCK TABLE emp IN SHARE MODE;B、LOCK TABLE emp IN EXCLUSIVE MODE;C、DELETE FROM emp WHERE job=’MANAGER’;D、INSERT INTO emp（empno，ename） VALUES （1289，’Dick’）;E、SELECT job FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno;
单选题You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario?（）AThe data in the segment will be compacted but the high water mark will not be adjusted BThe EMPLOYEES table will be changed to read-only mode during the shrink operation CThe indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is overDThe shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation EData manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operation
单选题Examine the following command; ALTER SYSTEM SET enable_ddl_logging = TRUE; Which statement is true?（）AOnly the data definition language (DDL) commands that resulted in errors are logged in the alert log file.BAll DDL commands are logged in the alert log file.CAll DDL commands are logged in a different log file that contains DDL statements and their execution dates.DOnly DDL commands that resulted in the creation of new segments are logged.EAll DDL commands are logged in XML format in the alert directory under the Automatic Diagnostic Repository (ADR) home.
多选题In order to exploit some new storage tiers that have been provisioned by a storage administrator, the partitions of a large heap table must be moved to other tablespaces in your Oracle 12c database? Both local and global partitioned B-tree Indexes are defined on the table. A high volume of transactions access the table during the day and a medium volume of transactions access it at night and during weekends. Minimal disrupt ion to availability is required. Which three statements are true about this requirement?（）AThe partitions can be moved online to new tablespaces.BGlobal indexes must be rebuilt manually after moving the partitions.CThe partitions can be compressed in the same tablespaces.DThe partitions can be compressed in the new tablespaces.ELocal indexes must be rebuilt manually after moving the partitions.
单选题Which statement is true regarding online redefinition for the migration of BasicFile LOBs to SecureFile LOBs？（）A It cannot be done in parallel.B It can be done at the table level or partition level.C It does not require additional storage because the operation is done online.D Local and global indexes are maintained automatically during the operation.
单选题Which parameter allows SQL*Loader to load data into a table with the indexes in the unusable state， prior to the load operation？（）AINDEXESBSKIP_INDEXES_MAINTENANCECSKIP_UNUSABLE_INDEXESDRESUMABLEEINDEXES_UNUSABLE
多选题What are three benefits of performing data definition language （DDL） statements against a partitioned table with the UPDATE GLOBAL INDEXES clause？（）AGlobal indexes are rebuilt automatically at the end of the DDL operation thereby avoiding problems with the UNUSABLE status.BYou do not have to search for invalid global indexes after the DDL command completes and rebuild them individually.CGlobal indexes are maintained during the operation of the DDL command and therefore can be used by any concurrent query.DGlobal indexes remain intact and available for use by data manipulation language （DML） statements even for sessions that have not enabled the skipping of unusable indexes.
单选题You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario?（）AThe EMPLOYEES table will be changed to read-only mode during the shrink operation.BThe indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is over.CThe shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation.DData manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operation.
多选题User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， or any data definition language （DDL） command： SQL SELECT ename FROM emp 2 WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations wouldwait when issued in SCOTT’s second session（）ALOCK TABLE emp IN SHARE MODE；BLOCK TABLE emp IN EXCLUSIVE MODE；CUPDATE emp SET sal=sal*1.2 WHERE job=MANAGER；DINSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；ESELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno；
多选题User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， orany data definition language （DDL） command： SQL SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations would waitwhen issued in SCOTT’s second session（）ALOCK TABLE emp IN SHARE MODE；BLOCK TABLE emp IN EXCLUSIVE MODE；CUPDATE emp SET sal=sal*1.2 WHERE job=ANAGER？UPDATE emp SET sal=sal*1.2 WHERE job=？ANAGER？DINSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；ESELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno
多选题Which statements are correct regarding indexes？ （）AWhen a table is dropped， the corresponding indexes are automatically dropped.BFor each DML operation performed， the corresponding indexes are automatically updated.CIndexes should be created on columns that are frequently referenced as part of an expression.DA non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically creates a uniqueindex.