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NEW QUESTION: 1
You identified some DSS queries that perform expensive join and aggregation operations.
The queries access historical data from noncurrent partition of the fact tables.
What three actions could you perform to improve the response time of the queries without modifying the SQL statements?
A. Set QUERY_REWRITE_ENABLED to TRUE at the instance level.
B. Create an STS for the statements, run SQL Access Advisor for the STS, and implement any generated recommendations for materialized views.
C. Create an STS for the statements, run SQL Tuning Advisor for the STS, and implement any generated recommendations for materialized views.
D. Set the QUERY_REWRITE_ENABLED to TRUE at the session level.
E. Set QUERY_REWRITE_INTEGRITY to ENFORCED at the instance level.
Answer: A,B,C
Explanation:
A:*QUERY_REWRITE_ENABLED allows you to enable or disable query
rewriting globally for the database.
Values:
false
Oracle does not use rewrite.
true Oracle costs the query with rewrite and without rewrite and chooses the method with the lower cost.
force Oracle always uses rewrite and does not evaluate the cost before doing so. Use force when you know that the query will always benefit from rewrite and when reduction in compile time is important.
To take advantage of query rewrite for a particular materialized view, you must enable query rewrite for that materialized view, and you must enable cost-based optimization.
C:You can use SQL Tuning Advisor to tune one or more SQL statements
D:Using the SQL Access Advisor Wizard or API, you can do the following:
Note:
* STS - SQL tuning set. *A SQL Tuning Set is a database object that includes one or more SQL statements and their execution statistics and execution context. You can use the set as an input source for various advisors, such as SQL Tuning Advisor, SQL Access Advisor, and SQL Performance Analyzer.
Incorrect:
E: QUERY_REWRITE_INTEGRITY determines the degree to which Oracle must enforce query rewriting. At the safest level, Oracle does not use query rewrite transformations that rely on unenforced relationships.
Values:
enforced
Oracle enforces and guarantees consistency and integrity.
trusted
Oracle allows rewrites using relationships that have been declared, but that are not
enforced by Oracle.
stale_tolerated Oracle allows rewrites using unenforced relationships. Materialized views are eligible for rewrite even if they are known to be inconsistent with the underlying detail data
NEW QUESTION: 2
Which is shown in a product breakdown structure?
A. The major products that are to be developed in a plan
B. In which order the products should be created
C. Management stages, major products and control points
D. What resources are required to develop the products
Answer: A
NEW QUESTION: 3
Which technique can be used to integrate AWS IAM (Identity and Access Management) with an on-premise LDAP (Lightweight Directory Access Protocol) directory service?
Please select:
A. Use an IAM policy that references the LDAP account identifiers and the AWS credentials.
B. Use IAM roles to automatically rotate the IAM credentials when LDAP credentials are updated.
C. Use AWS Security Token Service from an identity broker to issue short-lived AWS credentials.
D. Use SAML (Security Assertion Markup Language) to enable single sign-on between AWS and LDAP.
Answer: D
Explanation:
Explanation
On the AWS Blog site the following information is present to help on this context The newly released whitepaper. Single Sign-On: Integrating AWS, OpenLDAP, and Shibboleth, will help you integrate your existing LDAP-based user directory with AWS. When you integrate your existing directory with AWS, your users can access AWS by using their existing credentials. This means that your users don't need to maintain yet another user name and password just to access AWS resources.
Option A.C and D are all invalid because in this sort of configuration, you have to use SAML to enable single sign on.
For more information on integrating AWS with LDAP for Single Sign-On, please visit the following URL:
https://aws.amazon.eom/blogs/security/new-whitepaper-sinEle-sign-on-inteErating-aws-openldap-and-shibboleth The correct answer is: Use SAML (Security Assertion Markup Language) to enable single sign-on between AWS and LDAP. Submit your Feedback/Queries to our Experts