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[Hardware] Quiz 1Z1-182 - Oracle Database 23ai Administration Associate–High Pass-Rate Onli

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【Hardware】 Quiz 1Z1-182 - Oracle Database 23ai Administration Associate–High Pass-Rate Onli

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Oracle Database 23ai Administration Associate Sample Questions (Q87-Q92):NEW QUESTION # 87
You are going to perform a hot remote clone of PDB1 from CDB1 as TESTPDB in CDB2. Which of the following is a necessary prerequisite for the hot remote clone?
  • A. PDB1 must be in read-only mode.
  • B. TESTPDB must be in read-only mode after the cloning process is complete.
  • C. PDB1 must be taken offline before the cloning process begins.
  • D. Both CDBs need to be in local undo mode.
Answer: A
Explanation:
C .True. Hot cloning requires the source PDB (PDB1) to be read-only to ensure consistency during the clone. Others are not prerequisites.

NEW QUESTION # 88
Which three statements are true about row chaining and row migration done by Oracle database block space management?
  • A. Update statements can result in one or more migrated rows.
  • B. A migrated row results in an update to any index on the table to point the row ID in the index to the row's new location.
  • C. Update statements can result in one or more chained rows.
  • D. Row pieces of a chained row must always reside in different blocks.
  • E. Insert statements can result in a migrated row.
Answer: A,B,C
Explanation:
A .True. Migration updates index ROWIDs.
B .True. Updates can migrate rows if space is insufficient.
C .True. Large updates can chain rows across blocks.
D .False. Chained rows may span blocks but aren't required to.
E .False. Inserts don't migrate; they chain if too large initially.

NEW QUESTION # 89
Which two are true about shrinking a segment online?
  • A. To shrink a table it must have a UNIQUE KEY constraint.
  • B. To shrink a table it must have a PRIMARY KEY constraint.
  • C. It must be in a tablespace that uses Automatic Segment Space Management (ASSM).
  • D. It is not possible to shrink either indexes or Index Organized Tables (IOTs).
  • E. To shrink a table it must have row movement enabled.
Answer: C,E
Explanation:
A .True. ROW MOVEMENT must be enabled for SHRINK SPACE.
B .False. Indexes and IOTs can be shrunk with CASCADE.
C .False. No such constraint requirement.
D .True. ASSM is required for online shrinking.
E .False. No primary key requirement.

NEW QUESTION # 90
Examine this command: ALTER DATABASE MOVE DATAFILE '/u01/sales01.dbf' TO '/u02/sales02.dbf'; Which two statements are true?
  • A. Tables with one or more extents in this data file may be queried during the execution of this command.
  • B. DML may be performed on tables with one or more extents in this data file during the execution of this command.
  • C. Compressed objects in sales01.dbf will be uncompressed in sales02.dbf after the move.
  • D. It overwrites any existing file with the name sales02.dbf in /u02 by default.
  • E. The "TO" clause containing the new file name must be specified even if Oracle Managed Files (OMF) is used.
Answer: A,B
Explanation:
The ALTER DATABASE MOVE DATAFILE command relocates a data file to a new location while the database remains online, introduced in Oracle 12c and enhanced in subsequent releases like 23ai. Let's evaluate each option:
A . DML may be performed on tables with one or more extents in this data file during the execution of this command.True. The move operation is online by default in Oracle 23ai, allowing DML (INSERT, UPDATE, DELETE) operations on tables within the data file being moved. The database ensures consistency using redo and undo mechanisms.
B . It overwrites any existing file with the name sales02.dbf in /u02 by default.False. By default, the command does not overwrite an existing file unless the REUSE clause is specified (e.g., ALTER DATABASE MOVE DATAFILE ... REUSE). Without it, the command fails if the target file exists.
C . The "TO" clause containing the new file name must be specified even if Oracle Managed Files (OMF) is used.False. When OMF is enabled (via DB_CREATE_FILE_DEST), the TO clause is optional. If omitted, Oracle automatically generates a file name and places it in the OMF destination.
D . Compressed objects in sales01.dbf will be uncompressed in sales02.dbf after the move.False. The move operation is a physical relocation of the data file; it does not alter the logical structure or compression state of objects within it. Compressed data remains compressed.
E . Tables with one or more extents in this data file may be queried during the execution of this command.True. The online nature of the move allows queries (SELECT statements) to proceed without interruption, leveraging Oracle's multi-version consistency model.

NEW QUESTION # 91
Which two Oracle database space management features require the use of locally managed tablespaces?
  • A. Free space management with bitmaps.
  • B. Server-generated tablespace space alerts.
  • C. Online segment shrink.
  • D. Automatic data file extension (AUTOEXTEND).
  • E. Oracle Managed Files (OMF).
Answer: A,C
Explanation:
A .False. Works with DMTs too.
B .True. LMTs use bitmaps, unlike DMT freelists.
C .False. OMF is independent of management type.
D .False. Alerts work with both.
E .True. Shrink requires LMTs with ASSM.

NEW QUESTION # 92
......
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