Expert Oracle Exadata - Parent Directory

CHAPTER 6 MAKING PCBScalibration process. The V$IO_CALIBRATION_STATUS view shows whether the calibration has been done,while the DBA_RSRC_IO_CALIBRATE view shows the results of the procedure. Here’s an example showinghow to use the procedure:SYS@EXDB1> select * from V$IO_CALIBRATION_STATUS;STATUS CALIBRATION_TIME------------- -------------------------------------------------------------NOT AVAILABLE1 row selected.SYS@EXDB1> !cat calibrate_io.sqlSET SERVEROUTPUT ONDECLARElat INTEGER;iops INTEGER;mbps INTEGER;BEGIN-- DBMS_RESOURCE_MANAGER.CALIBRATE_IO (, , iops, mbps, lat);DBMS_RESOURCE_MANAGER.CALIBRATE_IO (&no_of_disks, 10, iops, mbps, lat);DBMS_OUTPUT.PUT_LINE ('max_iops = ' || iops);DBMS_OUTPUT.PUT_LINE ('latency = ' || lat);dbms_output.put_line('max_mbps = ' || mbps);end;/SYS@EXDB1> set timing onSYS@EXDB1> @calibrate_ioEnter value for no_of_disks: 36-- switch to other session on DB server> toptop - 21:12:32 up 10 days, 9:27, 3 users, load average: 0.49, 0.44, 0.47Tasks: 814 total, 1 running, 813 sleeping, 0 stopped, 0 zombieCpu(s): 0.4%us, 0.1%sy, 0.0%ni, 99.4%id, 0.1%wa, 0.0%hi, 0.0%si, 0.0%stMem: 74027752k total, 52225108k used, 21802644k free, 829336k buffersSwap: 16771852k total, 0k used, 16771852k free, 43078508k cachedPID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND14825 oracle 15 0 5225m 22m 19m S 1.7 0.0 0:00.15 ora_cs02_EXDB114827 oracle 15 0 5225m 22m 19m S 1.1 0.0 0:00.14 ora_cs03_EXDB114831 oracle 15 0 5225m 22m 19m S 1.1 0.0 0:00.14 ora_cs05_EXDB111810 oracle 15 0 12.2g 54m 39m S 0.6 0.1 12:44.67 ora_dia0_POC114821 oracle 15 0 5225m 22m 19m S 0.6 0.0 0:00.13 ora_cs00_EXDB114823 oracle 15 0 5225m 22m 19m S 0.6 0.0 0:00.15 ora_cs01_EXDB114829 oracle 15 0 5225m 22m 19m S 0.6 0.0 0:00.12 ora_cs04_EXDB115239 osborne 16 0 13268 1648 816 R 0.6 0.0 0:00.03 top28118 oracle RT 0 335m 133m 52m S 0.6 0.2 88:21.34150