Following are the Performance Engineering Interview Questions Set #13. Q. 61 How can lock contention be identified in an AWR report? Ans: High wait events like “enq: TX- row lock contention” or “enq: TM- contention”…
Following are the Performance Engineering Interview Questions Set #12. Q. 56 What role does the buffer cache play in database performance? Ans: The buffer cache stores copies of data blocks read from the disk. A…
Following are the Performance Engineering Interview Questions Set #11. Q. 51 In the AWR report, where can you find information about PGA memory usage? Ans: The “Memory Statistics” section, specifically under “PGA Aggr Target Stats,”…
Following are the Performance Engineering Interview Questions Set #10. Q. 46 What is a Large Pool in Oracle DB? Ans: The large pool is an optional memory area intended for memory allocations that are larger than is…
Following are the Performance Engineering Interview Questions Set #9. Q. 41 What is Library Cache in Oracle DB? Ans: The library cache is a shared pool memory structure that stores executable SQL and PL/SQL code. This cache…
Following are the Performance Engineering Interview Questions Set #8. Q. 36 What are the Oracle Database memory caches that affect performance? Ans: The main Oracle Database memory caches that affect performance include: Q. 37 What…