While taking hot backup (begin end backup) what will happens back end?
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You look at the dba_rollback_segs view and see that you have a large number of wraps is this a problem?
I am getting error "no communication channel" after changing the domain name? What is the solution?
System tablespace cant be exported from one database and imported into another why?
Tell me about standby database? What should we watch out for?
What is the difference between a database and instance?
What causes the "snapshot too old" error? How can this be prevented or mitigated?
Which date function is used to find the difference between two dates?
How should a many-to-many relationship be handled?
Does dba need to know programming?
Explain procedure to change characterset of a database.
Which files are vital that should be backed up?
Discuss row chaining, how does it happen? How can you reduce it?