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Q51. View the Exhibit and examine the PL/SQL code.
Identify the sections of the code that need to be modified for better performance gains. (Choose all that apply.)
A. Use cursors to fetch values.
B. Remove redundant SQL statements in the procedures.
C. Avoid the NOT NULL constraint when declaring the variable.
D. Define and compile procedures independently, and not as part of a package.
Answer: B,C
Q52. Which two statements are true about the working of fine-grained access? (Choose two.)
A. Security policies can be associated only with tables, but not with views.
B. Different policies can be used for SELECT, INSERT, UPDATE, and DELETE statements.
C. User statements are dynamically modified by the Oracle server through a security policy function.
D. Fine-grained access control policies always remain in effect until they are dropped from a table or view.
Answer: B,C
Q53. You executed the following command to alter the session parameter:
SQL> ALTER SESSION SET PLSCOPE_SETTINGS = 'IDENTIFIERS:ALL'
Which two statements are true in this scenario? (Choose two.)
A. If the SYSAUX tablespace is unavailable, and you compile a program unit, PL/Scope does not collect data for the compiled object.
B. All the identifiers declared in compiled program units before altering the parameter settings appear in the *_IDENTIFIER static data dictionary views.
C. All the identifiers declared in compiled program units before altering the parameter settings do not appear in the *_IDENTIFIER static data dictionary views.
D. If the SYSAUX tablespace is unavailable, and you compile a program unit, PL/Scope collects data for the compiled object and stores it in the SYSTEM tablespace.
Answer: A,C
Q54. Which two statements are true about associative arrays and varrays? (Choose two.)
A. Only varrays must use sequential numbers as subscripts.
B. Only varrays can be used as column types in database tables.
C. Both associative arrays and varrays must use sequential numbers as subscripts.
D. Both associative arrays and varrays can be used as column types in database tables.
Answer: A,B
Q55. Which two statements are true about the context of an application? (Choose two.)
A. It is attached to a session.
B. It is owned by the user SYS.
C. A user can change the context of his or her application.
D. The PL/SQL package associated with the contex t must exist before the context is created.
E. The predefined attributes in the USEREN V application context can be changed as per the requirements.
Answer: A,B
Q56. View the Exhibit and examine the procedure to create a trigger name based on the table name supplied to the procedure.
Which three statements are appropriate for protecting the code in the procedure from SQL injection? (Choose three.)
A. Explicitly validate the identifier length limit.
B. Add AUTHID DEFINER to the definition of the procedure.
C. Use PRAGMA RESTRICT_REFERENCES in the procedure.
D. Filter out control characters in user-supplied identifier names.
E. Use the object ID of the table from the data dictionary to build the trigger name.
Answer: A,D,E
Q57. Examine the settings for a user session given below:
RESULT_CACHE_MODE= FORCE
What would be the implications of this setting on query execution? (Choose all that apply.)
A. All query results are stored in the result cache if possible.
B. Query results that are bigger than the available space in the result cache are not cached.
C. Query results are stored only when you explicitly use the /*+ result_cache */ hint in your query.
D. Query results are stored even when you explicitly use the /*+ no_result_cache */ hint in your query.
Answer: A,B
Q58. Examine the following parameter values for a session:
PLSQL_CODE_TYPE = NATIVE
PLSQL_OPTIMIZE_LEVEL = 2
Which two statements are true in this scenario? (Choose two.)
A. The compiler automatically inlines subprograms even if you specify that they not be inlined.
B. The compiler optimizes PL/SQL programs by elimination of unnecessary computations and exceptions.
C. PL/SQL statements in a PL/SQL program unit are compiled into machine-readable code, and stored in the SYSTEM tablespace.
D. PL/SQL statements in a PL/SQL program unit are compiled into an intermediate form, machine-readable code, which is stored in the database dictionary.
Answer: B,C
Q59. Which two statements are true about the query results stored in the query result cache? (Choose two.)
A. If any of the tables used to build a query is modified by an ongoing transaction in the current session, the query result is not cached.
B. A query result based on a read-consistent snapshot of data that is older than the latest committed version of the data is not cached.
C. Adding the RESULT_CACHE hint to inline views enables optimizations between the outer query and the inline view, and the query result is cached.
D. A query result for a query that has a bind variable is stored in the cache and is reused if the query is equivalent even when the bind variable has a different value.
Answer: A,B
Q60. You created a PL/SQL function with the RESULT_CACHE and RELIES_ON clauses. In which scenarios is the cached result bypassed? (Choose all that apply.)
A. when the size for the memory allocated for the result cache is increased
B. when the function is executed in a session frequently with the same parameter value
C. when the database administrator has disabled the use of the result cache during application patching
D. when a data manipulation language (DML) statement is executed in a session on a table or view that was specified in the RELIES_ON clause of a result-cached function
Answer: C,D
