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?

2672

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.

2145

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

1 4774

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

2403

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

2712

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

2348

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

2025

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

1898

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

1 4809

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

2 6291

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

1 5245

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

2481

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

1 5466

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

1 4501

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

2036

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Un-Answered Questions { DB Administration }

What view(s) do you use to associate a user's SQLPLUS session with his o/s process?

2538

how can you find out if a table can be redefined?

1002

2145

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

1898

What is a system database and what is a user database? : sql server DBA

1213

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

2285

how to restore files with rman?

2293

how can you communicate with operating system files from oracle?

1038

How many files can a database contain in sql server?how many types of data files exists in sql server? How many of those files can exist for a single database? : sql server DBA

1192

which background process invoke at the time of upgradation tell me???

2718

what are the differences of where and if in SAS?

2185

Draft one mock email requesting your non-technical management grant you downtime to (provide justification where applicable) complete the following tasks: (1) Generate statistics on a large table; (2) Generate an RDA – if you don't know what an RDA is please say so. (3) Rename datafiles.

2162

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

2613

what is the diffrence between core dba and apps dba?

2561

suppose you want to audit specific activities on sensitive data. How can you achieve that?

993

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