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Interview Questions Oracle DBA

dba interview questions

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# Article Title Hits
1 What is Full Outer Joins? 724
2 What is Outer Joins? 607
3 What is Cartesian Joins? 556
4 What is Sort Merge Joins? 394
5 What is Hash Joins? 480
6 What is Nested Loop Joins? 447
7 What are joins? How query optimizer executes join statements and chooses execution plan for join statement? 447
8 What are the different types of access path that can be followed by optimizer? 577
9 What is an access path for query optimizer? 447
10 What do you mean by Histograms? 446
11 What are optimizer statistics how can be collected? 370
12 What is optimizer mode SQL Hint and what does? 462
13 How optimizer mode can be change? 1000
14 What do you mean by “Throughput” or “Best response Time”? 767
15 What operation query optimizer performs? 369
16 What are the types of query optimizer? 565
17 What is query optimizer and what does? 362
18 What is TKPROF? 417
19 What is SQL Trace? 352
20 How you run explain plan statement? 374
 
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