Oracle General Interview Questions
Questions Answers Views Company eMail

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

1585

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?

1483

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

1483

How would you go about verifying the network name that the local_listener is currently using?

1582

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

1419

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

1882

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

2411

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?

1498

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.

1481

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

1415

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

3974

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

1 2727

How would you best determine why your MVIEW couldnt FAST REFRESH?

1410

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

1800

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

1455


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Un-Answered Questions { Oracle General }

What are the differences between primary key and unique key?

487


How to define and use table alias names in oracle?

495


What are the predefined tablespaces in a database?

541


What are the major difference between truncate and delete?

495


Name the three major set of files on disk that compose a database in Oracle?

608






Explain oracle 12c new features for developers?

512


Differentiate between function and procedure in oracle.

542


How to lock and unlock a user account in oracle?

589


How to use existing values in update statements using oracle?

520


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

1556


Assuming that you are an End User How to find that in the payment Batch some of the Invoice was  Missing To pay How to find That??

1251


what is Single Byte Overhead...?

2033


What are privileges and grants?

547


An automatic job running via DBMS_JOB has failedKnowing only that its failed, how do you approach troubleshooting this issue?

1589


Explain joins in oracle?

542