100% Pass | Oracle certification 1Z0-148 study guide

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Share some Database Application Development 1Z0-148 exam questions and answers below.

Examine the following SQL statement:

ALTER SESSION SET PLSQL_OPTIMIZE_LEVEL=3;

What is the result of executing this statements?

A. The PL/SQL optimize level for some existing PL/SQL units will be changed as an immediate result.

B. The PL/SQL optimize level for subsequently complied PL/SQL units will be set to 3 and inlining will be enabled.

C. The PL/SQL optimize level for subsequently compiled PL/SQL units will be set to 3 and inlining will be disabled.

D. This statement will fail because PLSQL_OPTIMIZE_LEVEL can only be set at the system level,

Answer: C

Which two blocks of code execute successfully?

A. DECLARESUBTYPE new_one IS BINARY_INTERGER RANGE 0..9;my_val new_one;BEGINmy_val :=0;END;

B. DECLARESUBTYPE new_string IS VARCHAR2 (5) NOT NULL;my_str_new_string;BEGINmy_str := ‘abc’;END;

C. DECLARESUBTYPE new_one IS NUMBER (2, 1);my_val new_one;BEGINmy_val :=12.5;END;

D. DECLARESUBTYPE new_one IS INTEGER RANGE 1..10 NOT NULL;my_val new_one;BEGINmy_val :=2;END;

E. DECLARESUBTYPE new_one IS NUMBER (1, 0);my_val new_one;BEGINmy_val := -1;END;

Answer: A,D

Which must be true in order to add RESULT_CACHE to a function header and have it compile successfully?

A. The IN parameters must not include BLOB, CLOB, collection or record data types.

B. The function must be created with invoker’s rights or in an anonymous block.

C. The function must be declared as a pipelined table function.

D. The function must have an OUT or an IN OUT parameter.

Answer: C

Which statement is true about internal and external LOBs?

A. An external LOB can be loaded into an internal LOB variable using the DBMS_LOB package.

B. A NOEXIST_DIRECTORY exception can be raised when using internal and external LOBs.

C. Internal and external LOBs can be written using DBMS_LOB.

D. After an exception transfers program control outside a PL/SQL block, all references to open external LOBs are lost.

E. When using DBMS_LOB.INSTR for internal and external LOBs, DBMS_LOB.OPEN should be called for each LOB.

Answer: D,E

Which data dictionary view contains the list of procedures and functions defined within package specification that you can execute?

A. ALL_SOURCE

B. ALL_DEPENDENCIES

C. ALL_OBJECTS

D. ALL_PROCEDURES

E. ALL_PLSQL_OBJECT_SETTINGS

Answer: D

Which statement is correct about DBMS_LOB.SETOPTIONS and DBMS_LOB.GETOPTIONS for SecureFiles?

A. DBMS_LOB.GETOPTIONS can only be used for BLOB data types.

B. DBMS_LOB.SETOPTIONS can perform operations on individual SecureFiles but not an entire column.

C. DBMS_LOB. SETOPTIONS can set option types COMPRESS, DUPLICATE, and ENCRYPT.

D. If a table was not created with compression specified in the store as securefile clause then DBMS_LOB.SETOPTIONS can be used to enable it later.

Answer: D

Which tablespace is used to store the data collected by PL/Scope?

A. UNDOTBS1

B. SYSAUX

C. SYSTEM

D. TEMP

E. USERS

Answer: B

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