Oracle database won't start - Interview Question? How to answer Interview in short-

Hello people

I am Java programmer, trying to gear to Oracle DB, attended a few Interview.

So far in the Interview they ask this question "How do troubleshoot you if Oracle database is not running / does not start?

Since I have no experience in real time.

I would say that I'll go and do a TNSPING, check the Listerner.ora entries. If Windows I will tell me that I'll check Services.

but so far, it seems that they are not happy with my answer.

So I ask each of you to tell me how I should answer.

I know it's the open question but how should I tell them in a nuttshell.

Thank you

Matt

I am Java programmer, trying to gear to Oracle DB, attended a few Interview.

So far in the Interview they ask this question "How do troubleshoot you if Oracle database is not running / does not start?

Since I have no experience in real time.

I would say that I'll go and do a TNSPING, check the Listerner.ora entries. If Windows I will tell me that I'll check Services.

but so far, it seems that they are not happy with my answer.

So I ask each of you to tell me how I should answer.

I know it's the open question but how should I tell them in a nuttshell.

Well - until now I disagree with ALL of the other answers!

IMHO the FIRST STEP in ANY troubleshooting task is to CONFIRM that the problem really exists.

The KEY part of this confirmation is to get ALL the information available to the person reporting the issue. In an interview which is SIMPLE - the person reporting the issue is sitting right in front of you. So instead of running around like a chicken with its head cut off you should begin by asking a few key questions:

1. you said that the data is not running

a. IS IT supposed TO BE running - that would be my VERY FIRST question!

b. How do you know this? A user did report it to you? Have you tried to use yourself?

c. How do confirm you the DB was down? Have what measures you taken?

d. What do you mean by DOWN? Stone cold dead? Running but not accessible to business users? Running but inaccessible to anyone including DBA?

e. what other information you have about the problem? Have you checked the log of alerts? When was the last time it was running normally? What could have happened since then to bring it down? There were backups or scheduled maintenance tasks?

2. you said that it does not start

a. How do you know this?

b. did you try to start it yourself?

c. how the restart was attempted? how much? where (what machine)?

d. what command they use? They use 'EM? Or a console?

(e) what has been the result? What has been the response on the console (if the console has been used) what has been the result if EM has been used?

Your answer to that seemingly simple question should have been to about a dozen questions of your own like I did just above. There is NOTHING to do, IMHO, before getting THE news AND ALL of the one who reports the problem - that includes interviewers.

Disappoint my more great in interviews is when otherwise intelligent people are so reluctant to ask questions to get the information they need to understand and confirm the question/problem.

The above is why I "disagreed" with the other responses made so far. Certainly, the alerts log is important and must be checked. But it's a lot easier knowing what the person concerned (interviewer) know asking them just before starting to run. As far as we know that the interviewer was ready to tell you what the alert log say if you just ask.

My rule #1 in an interview: ASK QUESTIONS!

Anyone who is not asking questions in my interviews gets demerits. I can train someone how to solve problems and perform DBA tasks. But I found it almost IMPOSSIBLE to tell when they don't know something if they don't ask questions or tell me "I don't know".

If someone just asking these questions above this would indicate to me that they know how to FIND the information they need, even if they don't know yet how to use this information.

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