Expert Oracle Exadata - Parent Directory

CHAPTER 13 MIGRATING TO EXADATA53: 336 Mb o/192.168.12.3/SYSTEM_CD_00_cell01 65: 1313600 Mb o/192.168.12.4/DATA_CD_00_cell02 93: 93456 Mb o/192.168.12.4/RECO_CD_00_cell02 105: 469136 Mb o/192.168.12.4/STAGE_CD_00_cell02 117: 336 Mb o/192.168.12.4/SYSTEM_CD_00_cell02 129: 1313600 Mb o/192.168.12.5/DATA_CD_00_cell03 157: 93456 Mb o/192.168.12.5/RECO_CD_00_cell03 169: 469136 Mb o/192.168.12.5/STAGE_CD_00_cell03 181: 336 Mb o/192.168.12.5/SYSTEM_CD_00_cell03 --------------------------------------------------------------------------------ORACLE_SID ORACLE_HOME================================================================================+ASM1 /u01/app/11.2.0/grid+ASM2 /u01/app/11.2.0/grid7. Once connectivity is established between the server and the storage cells, theASM instance on the database server should be able to add Exadata grid disksto its current ASM disk groupdisk groups using the alter disk group add disk… REBALANCE POWER 5 nowait command. When the grid disks are added to thecurrent disk groups, ASM will begin rebalancing data onto the new disks at arate determined by the power n parameter of the add disk command. A powerrange of 1–11 represents the number of rebalance processes that willparticipate in the operation. Nowait causes the command to return you to theprompt rather than hanging until the operation is complete.8. You can see the current status of the rebalance operation by querying thev$asm_operation view from SQL*Plus (connected to the ASM instance).9. After the rebalance is complete, the old disks can be removed from the diskgroups using the alter disk group drop disk … power 5 nowait command.Another disk group rebalance will begin moving the remaining data off of theold disks and onto the Exadata storage grid disks.10. Once all data has been migrated onto Exadata storage, the database is shutdown and restarted on Exadata. Before restarting the database, use thisopportunity to upgrade the disk groupdisk groups from version11.1 to 11.2 ifnecessary.11. Post-migration tasks must be performed to add the database to the ClusterReady Services configuration.462