国外公司的Oracle DBA试题-考试认证

   Oracle DBA Interview Questions By B G

    1. How many memory layers are in the shared pool？ 网管bitscn_com

    2. How do you find out from the RMAN catalog if a particular archive log has been backed-up？ 网管联盟bitsCN@com

    3. How can you tell how much space is left on a given file system and how much space each of the file system's subdirectories take-up？ 中国网管联盟bitsCN.com

    4. Define the SGA and：

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    ？ How you would configure SGA for a mid-sized OLTP environment？

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    ？ What is involved in tuning the SGA？

    5. What is the cache hit ratio， what impact does it have on performance of an Oracle database and what is involved in tuning it？ 网管网www_bitscn_com

    6. Other than making use of the statspack utility， what would you check when you are monitoring or running a health check on an Oracle 8i or 9i database？ 网管联盟bitsCN@com

    7. How do you tell what your machine name is and what is its IP address？

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    8. How would you go about verifying the network name that the local_listener is currently using？ 中国网管论坛bbs.bitsCN.com

    9. You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance？ 网管联盟bitsCN@com

    10. What view（s） do you use to associate a user's SQLPLUS session with his o/s process？ 网管下载dl.bitscn.com

    11. What is the recommended interval at which to run statspack snapshots， and why？

    12. What spfile/init.ora file parameter exists to force the CBO to make the execution path of a given statement use an index， even if the index scan may appear to be calculated as more costly？

    13. Assuming today is Monday， how would you use the DBMS_JOB package to schedule the execution of a given procedure owned by SCOTT to start Wednesday at 9AM and to run subsequently every other day at 2AM. 中国网管论坛bbs.bitsCN.com

    14. How would you edit your CRONTAB to schedule the running of /test/test.sh to run every other day at 2PM？

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    15. What do the 9i dbms_standard.sql_txt（） and dbms_standard.sql_text（） procedures do？ 中国网管联盟bitsCN.com

    16. In which dictionary table or view would you look to determine at which time a snapshot or MVIEW last successfully refreshed？

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    17. How would you best determine why your MVIEW couldn't FAST REFRESH？

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    18. How does propagation differ between Advanced Replication and Snapshot Replication （readonly）？ 中国网管联盟bitsCN.com

    19. Which dictionary view（s） would you first look at to understand or get a high-level idea of a given Advanced Replication environment？ 网管u家u.bitscn@com

    20. How would you begin to troubleshoot an ORA-3113 error？ 中国网管联盟bitsCN.com

    21. Which dictionary tables and/or views would you look at to diagnose a locking issue？

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    22. An automatic job running via DBMS_JOB has failed. Knowing only that "it's failed"， how do you approach troubleshooting this issue？

    23. How would you extract DDL of a table without using a GUI tool？ 网管论坛bbs_bitsCN_com

    24. You're getting high "busy buffer waits" - how can you find what's causing it？ 中国网管联盟bitsCN.com

    25. What query tells you how much space a tablespace named "test" is taking up， and how much space is remaining？

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