Expert Oracle Exadata - Parent Directory

CHAPTER 7 RESOURCE MANAGEMENTgroup. For example, the following listing shows how the I/O Resource Groups for our SCRATCH and SNIFFdatabases would be represented in the METRICCURRENT and METRICHISTORY objects.objectTypemetricObjectName----------------------- ----------------------------IORM_DATABASESCRATCHIORM_DATABASESNIFFIORM_CATEGORYAPPS_CATEGORYIORM_CATEGORYBATCH_CATEGORYIORM_CATEGORYOTHERIORM_CONSUMER_GROUP SCRATCH.APPSIORM_CONSUMER_GROUP SCRATCH.MAINTENANCEIORM_CONSUMER_GROUP SCRATCH.REPORTSIORM_CONSUMER_GROUP SCRATCH.OTHER_GROUPSIORM_CONSUMER_GROUP SNIFF.APPSIORM_CONSUMER_GROUP SNIFF.MAINTENANCEIORM_CONSUMER_GROUP SNIFF.REPORTSIORM_CONSUMER_GROUP SNIFF.OTHER_GROUPSBackground ProcessesAs we discussed earlier, database background processes are automatically assigned to built-in IORMconsumer groups according to priority. Table 7-6 shows these special IORM consumer groups, alongwith a description of what they are used for.Table 7-6. Built-In Consumer Groups for Background ProcessesConsumer Group_ASM__ORACLE_BG_CATEGORY__ORACLE_MEDPRIBG_CATEGORY__ORACLE_LOWPRIBG_CATEGORY_DescriptionI/O related to Oracle ASM volume managementHigh-priority I/O requests issued from the databasebackground processesMedium-priority I/O requests issued from the databasebackground processesLow-priority I/O requests issued from the databasebackground processesMining the MetricsNow that you have a pretty good idea of what types of metrics are collected by cellsrv, and how to get tothem, let’s take a look at how this information can be reported and interpreted. First, however, weshould mention that as a reporting tool, CellCLI is very limited. For example, multiple filters can beapplied to your search criteria using =, LIKE, or AND, but the lack of an OR verb, and the lack ofparentheses for setting precedence, make it somewhat cumbersome; if not utterly inadequate forreporting. Also, there is no aggregation functionality. For example, there is no way to roll up the small224