Expert Oracle Exadata - Parent Directory

CHAPTER 2 OFFLOADING / SMART SCAN_cell_offload_virtual_columns_cell_range_scan_enabled_cell_storidx_mode_db_check_cell_hints_disable_cell_optimized_backups_kcfis_cell_passthru_enabled_kcfis_kept_in_cellfc_enabled_kcfis_nonkept_in_cellfc_enabledenable offload of predicates on virtualcolumns to cellsenable CELL processing of index range scansCell Storage Index modedisable cell optimized backupsDo not perform smart IO filtering on the cellEnable usage of cellsrv flash cache for keptobjectsEnable use of cellsrv flash cache fornon-kept objects22 rows selected.We’ve used a few of these parameters in the examples in this chapter and we’ll use several in theupcoming chapters. There are several other kcfis (kernel file intelligent storage) parameters as well.Here’s a listing of them with descriptions:SYS@SMITHERS> @parmsdEnter value for parameter: kcfisEnter value for isset:Enter value for show_hidden: YNAMEDESCRIPTION---------------------------------------- --------------------------------------------------_kcfis_block_dump_levelSmart IO block dump level_kcfis_caching_enabledenable kcfis intra-scan session caching_kcfis_cell_passthru_enabledDo not perform smart IO filtering on the cell_kcfis_control1Kcfis control1_kcfis_control2Kcfis control2_kcfis_control3Kcfis control3_kcfis_control4Kcfis control4_kcfis_control5Kcfis control5_kcfis_control6Kcfis control6_kcfis_disable_platform_decryption Don't use platform-specific decryption on thestorage cell_kcfis_dump_corrupt_block_kcfis_fast_response_enabled_kcfis_fast_response_initiosizeDump any corrupt blocks found during smart IOEnable smart scan optimization for fast response(first rows)Fast response - The size of the first IO inlogical blocks_kcfis_fast_response_iosizemult Fast response - (next IO size = current IO size *this parameter)_kcfis_fast_response_thresholdFast response - the number of IOs after whichsmartIO is used63