Expert Oracle Exadata - Parent Directory

CHAPTER 9 RECOVERING EXADATATable 9-1. Metric Name PrefixesName PrefixCL_CD_GD_FC_DB_CG_CT_N_DescriptionCell level metricsCell disk metricsGrid disk metricsFlash Cache metricsDatabase metricsIORM Consumer group metricsIORM CategoriesNetwork (InfiniBand network interconnect)For I/O-related metrics, the metric name continues with one of the values listed in Table 9-2.Table 9-2. I/O Metric AbbreviationsAbbreviationIO_RQIO_BYIO_TMIO_WTDescriptionNumber of I/O requestsNumber of megabytesI/O LatencyI/O Wait timeFor I/O-related metrics, the next part of the metric name may be R (for reads) or W (for writes)followed by SM or LG for small or large reads and writes. The last abbreviation in the metric name will beeither SEC for seconds or RQ for requests. For example, the following command shows the number ofsmall I/O write operations per second for all grid disks on the storage cell.CellCLI> list metriccurrent where name = GD_IO_RQ_W_SM_SECGD_IO_RQ_W_SM_SEC DATA_CD_00_cell01 0.8 IO/secGD_IO_RQ_W_SM_SEC DATA_CD_01_cell01 0.9 IO/secGD_IO_RQ_W_SM_SEC DATA_CD_02_cell01 1.4 IO/secGD_IO_RQ_W_SM_SEC DATA_CD_03_cell01 1.6 IO/sec...281