Expert Oracle Exadata - Parent Directory

CHAPTER 7 RESOURCE MANAGEMENTInterdatabase: SCRATCH,SNIFFOTHERCategory: APPS_CATEGORYBATCH_CATEGORYOTHERIntradatabase: APPSREPORTSMAINTENANCEOTHER_GROUPSEvery 60 seconds, cellsrv collects key performance metrics from the I/O queues and stores them inthe METRICCURRENT object. Note that we said object, not table or file. Cellsrv is a Java program, written byJava developers, not SQL developers. So unfortunately, these metrics are not stored in the familiartabular format DBAs have come to know and love. Instead of tables, columns, and rows, these metricsare stored in objects and attributes. The following listing shows the structure of the METRICCURRENT objectalong with a few sample records.CellCLI> describe metriccurrentnamealertStatecollectionTimemetricObjectNamemetricTypemetricValueobjectTypeCellCLI> LIST METRICCURRENT –WHERE name = 'CT_IO_RQ_LG' –AND objecttype = 'IORM_CATEGORY' -ATTRIBUTES name, objecttype, metricObjectName, metricValueName objectType metricObjectName metricValue-------------- -------------- ----------------- -------------------CT_IO_RQ_LG IORM_CATEGORY APPS_CATEGORY 0 IO requestsCT_IO_RQ_LG IORM_CATEGORY BATCH_CATEGORY 16,079 IO requestsCT_IO_RQ_LG IORM_CATEGORY OTHER 2,498 IO requests220