多选题Which three table transformations can be done using online redefinition of tables？（）AABBCCDDEE
多选题
Which three table transformations can be done using online redefinition of tables？（）
A
A
B
B
C
C
D
D
E
E
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解析：
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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.
Which two statements are true regarding the USING clause in table joins?（）A、It can be used to join a maximum of three tables B、It can be used to restrict the number of columns used in a NATURAL join C、It can be used to access data from tables through equijoins as well as nonequijoins D、It can be used to join tables that have columns with the same name and compatible data types
In one of your online transaction processing （OLTP） applications， most users frequently modify the values， including the key values， of the application tables. Some users generate application reports by using multiple application tables. What is the best table structure that you can use to gain optimal performance？（）A、heap tableB、object tableC、external tableD、clustered tableE、global temporary tableF、indexorganized table （IOT）
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.
In one of your online transaction processing （OLTP） applications， most users frequently modify the values， including the key values， of the application tables. Some users generate application reports by using multiple application tables. What is the best table structure that you can use to gain optimal performance？（）A、heap tableB、object tableC、external tableD、clustered tableE、global temporary tableF、index-organized table （IOT）
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.
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.
You use the segment advisor to help determine objects for which space may be reclaimed. Which three statements are true about the advisor given by the segment advisor?（）A、It may advise the use of online table redefinition for tables in dictionary managed tablespace.B、It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows.C、It may advise the use of online table redefinition for tables in locally managed tablespacesD、It will detect and advise about chained rows.E、It may advise the use of segment shrink for free list managed tables.
Which two statements are true regarding the USING and ON clauses in table joins?（）A、Both USING and ON clauses can be used for equijoins and nonequijoins B、Amaximum of one pair of columns can be joined between two tables using the ON clause C、The ON clause can be used to join tables on columns that have different names but compatible data types D、The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause
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.
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.
Oracle9i provides a database package called dbms_redefinition to perform an online rebuild of a table. Which two steps are you recommended to do prior to issuing thedbms_redefinition_start_redef table procedure call？（）A、Grand privileges on the interim table.B、Invoke the dbms_redefinition.can_redef_table procedure.C、Invoke the dbms_redefinition.sync_interim_table procedure.D、Create any triggers， indexes， or constraints on the interim table.E、Create an empty interim table with all the desired characteristics.
Which three tasks can be performed by using the performance Schema?（）A、Finding queries that are not using indexesB、Finding rows that are locked by InnoDBC、Finding client connection attributesD、Finding the part of a code in which a single query is spending timeE、Finding the size of each table
单选题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?（）AOracle Data Pump.BAn ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD to move the indexes.CAn ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD ONLINE to move the indexes.DOnline Table Redefinition.EEdition-Based Table Redefinition.
多选题Which two statements are true regarding the USING clause in table joins?（）AIt can be used to join a maximum of three tablesBIt can be used to restrict the number of columns used in a NATURAL joinCIt can be used to access data from tables through equijoins as well as nonequijoinsDIt can be used to join tables that have columns with the same name and compatible data types
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.
多选题Which two statements are true regarding the USING and ON clauses in table joins?（）ABoth USING and ON clauses can be used for equijoins and nonequijoinsBAmaximum of one pair of columns can be joined between two tables using the ON clauseCThe ON clause can be used to join tables on columns that have different names but compatible data typesDThe WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause
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.
多选题Which three statements are correct about temporary tables？（）AIndexes and views can be created on temporary tables.BBoth the data and the structure of temporary tables can be exported.CTemporary tables are always created in a user’s temporary tablespace.DThe data inserted into a temporary table in a session is available to other sessions.EData manipulation language （DML） locks are never acquired on the data of temporary tables.
单选题In one of your online transaction processing （OLTP） applications， most users frequently modify the values， including the key values， of the application tables. Some users generate application reports by using multiple application tables. What is the best table structure that you can use to gain optimal performance？（）A Heap tableB Object tableC External tableD Clustered tableE Global temporary tableF Index-organized table （IOT）
多选题Oracle9i provides a database package called dbms_redefinition to perform an online rebuild of a table. Which two steps are you recommended to do prior to issuing thedbms_redefinition_start_redef table procedure call？（）AGrand privileges on the interim table.BInvoke the dbms_redefinition.can_redef_table procedure.CInvoke the dbms_redefinition.sync_interim_table procedure.DCreate any triggers， indexes， or constraints on the interim table.ECreate an empty interim table with all the desired characteristics.
多选题Which three tasks can be performed by using the performance Schema?（）AFinding queries that are not using indexesBFinding rows that are locked by InnoDBCFinding client connection attributesDFinding the part of a code in which a single query is spending timeEFinding the size of each table
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.
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.
多选题You use the segment advisor to help determine objects for which space may be reclaimed. Which three statements are true about the advisor given by the segment advisor?（）AIt may advise the use of online table redefinition for tables in dictionary managed tablespace.BIt may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows.CIt may advise the use of online table redefinition for tables in locally managed tablespacesDIt will detect and advise about chained rows.EIt may advise the use of segment shrink for free list managed tables.
单选题In one of your online transaction processing （OLTP） applications， most users frequently modify the values， including the key values， of the application tables. Some users generate application reports by using multiple application tables. What is the best table structure that you can use to gain optimal performance？（）Aheap tableBobject tableCexternal tableDclustered tableEglobal temporary tableFindexorganized table （IOT）
多选题Which three methods will show the storage engine for the Country table?（）AABBCCDDEE