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Oracle Database Administration I Sample Questions (Q144-Q149):

NEW QUESTION # 144
Which two statements are true about UNDO and REDO? (Choose two.)

A. DML modifies Oracle database objects and generates UNDO and REDO
B. The generation of UNDO generates REDO
C. DML modifies Oracle database objects and only generates UNDO
D. DML modifies Oracle database objects and only generates REDO
E. The generation of REDO generates UNDO

Answer: B,E

NEW QUESTION # 145
You must create a tablespace of non-standard block size in a new file system and plan to use this command:

The standard block size is 8k but other non-standard block sizes will also be used. Which two are requirements for this command to succeed?

A. The /u02 file system must have at least lOOg space for the datafile.
B. db_32r_cache_si2e must be less than db_ca=he_size.
C. db_cache_s:ze must be set to a size that is smaller than db_32k_cache_size.
D. d3_32k_cache_size should be set to a value greater than db_cache_size.
E. The operating system must use a 32k block size.
F. db_32k_cache_size must be set to a value that can be accommodated in the SGA.

Answer: B,C

NEW QUESTION # 146
Which three statements are true regarding indexes? (Choose three.)

A. When a table is dropped and is moved to the RECYCLE BIN, all indexes built on that table are permanently dropped
B. A table belonging to one user can have an index that belongs to a different user
C. A SELECT statement can access one or more indices without accessing any tables
D. A UNIQUE index can be altered to be non-unique
E. An update to a table can result in no updates to any of the table's indexes
F. An update to a table can result in updates to any or all of the table's indexes

Answer: A,B,D

Explanation:
https://docs.oracle.com/cd/A87860_01/doc/server.817/a76956/indexes.htm
https://docs.oracle.com/cd/B10501_01/server.920/a96521/indexes.htm

NEW QUESTION # 147
In the SALES database, DEFERRED_SEGMENT_CREATION is TRUE.
Examine this command:
SQL> CREATE TABLE T1(c1 INT PRIMARY KEY, c2 CLOB);
Which segment or segments, if any, are created as a result of executing the command?

A. T1 and an index segment created for the primary key only
B. no segments are created
C. T1, an index segment for the primary key, a LOB segment, and a lobindex segment
D. T1, an index segment for the primary key, and a LOB segment only
E. T1 only

Answer: E

NEW QUESTION # 148
In your data center, Oracle Managed Files (OMF) is used for all databases.
All tablespaces are smallfile tablespaces.
SALES_Q1 is a permanent user-defined tablespace in the SALES database.
Examine this command which is about to be issued by a DBA logged in to the SALES database:
ALTER TABLESPACE sales_q1 ADD DATAFILE;
Which are two actions, either one of which you could take to ensure that the command executes successfully? (Choose two.)

A. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 Mb of available space.
B. Add the AUTOEXTEND ON clause with NEXT set to 100M.
C. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify with at least 50 Mb of available space.
D. Specify a path in the DATAFILE clause of the command specifying a location with at least 100M of available space.
E. Ensure that DB_CREATE_FILE_DEST specifies a location with at least 100 Mb of available space.

Answer: B,D

NEW QUESTION # 149
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