Explain the process you follow to start looking into performance issue at database level(if the application is running very slow, at what points do you need to go about the database inorder to improve the performance?)
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You see multiple fragments in the system tablespace, what should you check first?
How many dba can you have?
Explain the wait events in statspack report 'enqueue'?
You have taken a manual backup of a datafile using os. How rman will know about it?
What is the difference between truncate and delete? Why is one faster? Can we rollback both? How would a full table scan behave after?
Which files are vital that should be backed up?
What is dump destination? What are bdump, cdump and udump?
What is the difference between rman and a traditional hotbackup?
What is the difference between truncate and delete? How would a full table scan behave after?
Which function is used to find the largest integer less than or equal to aspecific value?
You look at the dba_rollback_segs view and see that you have a large number of wraps is this a problem?
What skills do you need to be a database administrator?