In AWR, the ‘Instance Efficiency Percentages’ table comes under the ‘Report Summary’ section. Refer to the below figure: The following metrics are available in the ‘Instance Efficiency Percentages’ table of an AWR report: Buffer Nowait…
In AWR, the Load Profile table comes under the ‘Report Summary’ section. Refer to the below figure: The following metrics are available in the Load Profile table of an AWR report: DB Time(s) DB Time(s)…
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…