Download OCP: Oracle9i performance tuning study guide by Joseph C. Johnson PDF

By Joseph C. Johnson

-The excellent strategy to arrange for the Oracle9i functionality Tuning examination! -Contains examination necessities, real-world state of affairs sidebars, scenario-based questions, and fill-in-the-blank questions. -The CD comprises flashcards, chapter-by-chapter assessments, randomly generated query units, an advantage examination, and an digital model of the e-book.

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Transactions must start and end in the same rollback segment. A transaction will attempt to wrap into the next extent of the rollback segment if the extent has no active transactions. If it does have active transactions, a new extent will be added to the rollback segment and the transaction will grow into this extent. See Chapter 8 for more details. 52. B. Grant the PLUSTRACE role to the users that are going to be using the AUTOTRACE utility in SQL*Plus. If they don’t belong to the role, they will receive an error if they try to set AUTOTRACE on.

What optional area of the SGA should be configured if Parallel Query is to be used? A. Redo Log Buffer B. Database Buffer Cache C. Shared Pool D. Large Pool 54. Which of the following is FALSE about AUTOTRACE (choose all that apply)? A. You need to belong to a specific role to use the tool. B. You need to SET AUTOTRACE ON to use the tool. C. You must have a PLAN_TABLE available to you. D. You can use the AUTOTRACE utility using third-party tools. 55. What statistic do you query for in V$SYSTEM_EVENT when examining the instance for Free List contention?

V$SQLTEXT would provide the entire text of the SQL. V$SQL only contains the first 1000 characters of the SQL statement. V$SQLAREA also does not display the entire text of the SQL statement and V$SQL_PLAN contains the address of the SQL statement and not the actual text. Remember though, the SQL contained in V$SQLTEXT may be contains in several rows, so when you perform the query you would want to use an ORDER BY clause. See Chapter 4 for more details. 31. B. SET_SQL_TRACE_IN_SESSION packaged procedure is the best method to use to trace another client processes session.

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