DB Administration Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

DB Administration Interview Questions

Questions Answers Views Company eMail

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?

2687

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.

2159

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

1 4795

What do the 9i dbms_standard.sql_txt() and dbms_standard.sql_text() procedures do?

2414

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

2721

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

2363

How does propagation differ between Advanced Replication and Snapshot Replication (read-only)?

2050

Which dictionary view(s) would you first look at to understand or get a high-level idea of a given Advanced Replication environment?

1912

How would you begin to troubleshoot an ORA-3113 error?

1 4827

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

2 6312

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

1 5255

How would you extract DDL of a table without using a GUI tool?

2492

You're getting high "busy buffer waits" - how can you find what's causing it?

1 5483

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

1 4521

Database is hung. Old and new user connections alike hang on impact. What do you do? Your SYS SQLPLUS session IS able to connect.

2048

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Un-Answered Questions { DB Administration }

What are the recovery models for a database? : sql server DBA

1133

What are the different ways you can create databases in sql server? : sql server DBA

1146

You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance?

4431

Query processing is slow(eg select query)how will u solve that

7925

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

2363

What purpose does the model database server? : sql server DBA

1199

what is the use of recording information about current session?

1056

what is grd?

1101

how can you initialize log miner?

1153

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?

2505

what is the role of dip user in our database?

2417

Claims and Drains are the locks used to control the concurrency between SQL processes and utilities. Referring to the above statement, what is the maximum number of concurrent Claimers for a Subsystem? Choice 1 32 Choice 2 64 Choice 3 128 Choice 4 256 Choice 5 No limit

2306

Database is hung. Old and new user connections alike hang on impact. What do you do? Your SYS SQLPLUS session IS able to connect.

2048

Typically, where is the conventional directory structure chosen for Oracle binaries to reside?

2626

what is a crs resource?

1170

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