1Z0-053 Exam Dumps | You need to perform an online table redefinition of an existing SALES table to partition it into two

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Question 44/442

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.

Correct Answer: A

Explanation/Reference:
Explanation:
When performing the online table redefinition, you will:
Copy dependent objects (such as triggers, indexes, materialized view logs, grants, and constraints) and statistics from the table being redefined to the interim table, using one of the following two methods.
Method 1 is the preferred method because it is more automatic, but there may be times that you would choose to use method 2. Method 1 also enables you to copy table statistics to the interim table.
Results of the Redefinition Process (link)
The following are the end results of the redefinition process:
The original table is redefined with the columns, indexes, constraints, grants, triggers, and statistics of

the interim table.
Dependent objects that were registered, either explicitly using REGISTER_DEPENDENT_OBJECT or

implicitly using COPY_TABLE_DEPENDENTS, are renamed automatically so that dependent object names on the redefined table are the same as before redefinition.
Note:
If no registration is done or no automatic copying is done, then you must manually rename the dependent objects.
The referential constraints involving the interim table now involve the redefined table and are enabled. Any indexes, triggers, materialized view logs, grants, and constraints defined on the original table (prior to redefinition) are transferred to the interim table and are dropped when the user drops the interim table. Any referential constraints involving the original table before the redefinition now involve the interim table and are disabled.
Some PL/SQL objects, views, synonyms, and other table-dependent objects may become invalidated.
Only those objects that depend on elements of the table that were changed are invalidated. For example, if a PL/ SQL procedure queries only columns of the redefined table that were unchanged by the redefinition, the procedure remains valid. See "Managing Object Dependencies" for more information about schema object dependencies.
Restrictions for Online Redefinition of Tables (link)
After redefining a table that has a materialized view log, the subsequent refresh of any dependent materialized view must be a complete refresh.

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(Choose all t...; Question 417: The DBA has chosen to manage SGA and PGA memory separately i...; Question 418: Which mode of database shutdown requires an instance recover...; Question 419: Which two statements about Oracle Direct Network File System...; Question 420: You executed the following commands in an RMAN session for y...; Question 421: You execute the following FLASHBACK TABLE command: SQL> F...; Question 422: Over the course of a day, a department performed multiple DM...; Question 423: Which of the following is a valid way of putting a tablespac...; Question 424: Which of these components correctly identify the unique valu...; Question 425: One of your databases is in ARCHIVELOGmode. You execute thes...; Question 426: At the request of a user, you issue the following command to...; Question 427: The SQL Tuning Advisor has been configured with default conf...; Question 428: Evaluate the following command: SQL> CREATE TABLE design_...; Question 429: On Friday at 11:30 am you decided to flash back the database...; Question 430: You need to perform a block media recovery on the tools01.db...; Question 431: You specify a nonzero value for the MEMORY_TARGET initializa...; Question 432: Which Scheduler view(s) can be queried to see which jobs are...; Question 433: You installed Oracle Database 11g and are performing a manua...; Question 434: You want the ability to recovery any time within the last se...; Question 435: Which of the following objects can be directly referenced by...; Question 436: Every Sunday the Unix system administrator has a job that ex...; Question 437: You are managing the APPPROD database as a DBA. You plan to ...; Question 438: Your archive-log destination directory runs out of space. Wh...; Question 439: Given a complete loss of your database, in what order would ...; Question 440: Which two prerequisites are needed for performing workload c...; Question 441: AUM (Automatic UNDO Management) has been retaining about 15 ...; Question 442: You want to back up your 100-GB database on a remote tape de...

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