What is difference between logical standby database and physical standby database?
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How do you prevent output from coming to the screen?
What is difference between co-related sub query and nested sub query?
Users get the following error: ora-00055 maximum number of dml locks exceeded? What is the problem and how do you fix it?
How many redo logs should you have and how should they be configured for maximum recoverability?
What is a production dba?
Explain dual table. Is any data internally stored in dual table. Lot of users is accessing select sysdate from dual and they getting some millisecond differences. If we execute select sysdate from emp; what error will we get. Why?
What is a dba why is this position necessary?
Which dba certification is best?
What will you do if in any condition you do not know how to troubleshoot the error at all and there are no seniors or your co-workers around?
What is the advantage of using rman?
What does database administrator do?
What are types of data model?