Exadata : Como cambiar el Modo del Flash Cache

Elemplo con una configuracion de 3 Storage Servers.

1 - Verificamos el modo actual

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e list cell attributes flashCacheMode

qr01celadm01: WriteBack

qr01celadm02: WriteBack

qr01celadm03: WriteBack

2 - Bajamos los servicios

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e alter cell shutdown services cellsrv

qr01celadm01: 

qr01celadm01: Stopping CELLSRV services...

qr01celadm01: The SHUTDOWN of CELLSRV services was successful.

qr01celadm02: 

qr01celadm02: Stopping CELLSRV services...

qr01celadm02: The SHUTDOWN of CELLSRV services was successful.

qr01celadm03: 

qr01celadm03: Stopping CELLSRV services...

qr01celadm03: The SHUTDOWN of CELLSRV services was successful.

3 - Vaciamos los datos del FlashCache

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e alter flashcache all flush

qr01celadm01: Flash cache qr01celadm01_FLASHCACHE altered successfully

qr01celadm02: Flash cache qr01celadm02_FLASHCACHE altered successfully

qr01celadm03: Flash cache qr01celadm03_FLASHCACHE altered successfully

4 - Eliminamos el FlashCache

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e drop flashcache

qr01celadm01: Flash cache qr01celadm01_FLASHCACHE successfully dropped

qr01celadm02: Flash cache qr01celadm02_FLASHCACHE successfully dropped

qr01celadm03: Flash cache qr01celadm03_FLASHCACHE successfully dropped

5 - Bajamos los servicios

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e alter cell shutdown services cellsrv

qr01celadm01: 

qr01celadm01: Stopping CELLSRV services...

qr01celadm01: The SHUTDOWN of CELLSRV services was successful.

qr01celadm02: 

qr01celadm02: Stopping CELLSRV services...

qr01celadm02: The SHUTDOWN of CELLSRV services was successful.

qr01celadm03: 

qr01celadm03: Stopping CELLSRV services...

qr01celadm03: The SHUTDOWN of CELLSRV services was successful.

6 - Cambiamos el Modo del FlashCache a Write Trough

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e alter cell flashCacheMode = WriteThrough

qr01celadm01: Cell qr01celadm01 successfully altered

qr01celadm02: Cell qr01celadm02 successfully altered

qr01celadm03: Cell qr01celadm03 successfully altered

7 - Levantamos los servicios

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e alter cell startup services cellsrv

qr01celadm01: 

qr01celadm01: Starting CELLSRV services...

qr01celadm01: The STARTUP of CELLSRV services was successful.

qr01celadm02: 

qr01celadm02: Starting CELLSRV services...

qr01celadm02: The STARTUP of CELLSRV services was successful.

qr01celadm03: 

qr01celadm03: Starting CELLSRV services...

qr01celadm03: The STARTUP of CELLSRV services was successful.

8 - Creamos el FlashCache 

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e create flashcache all

qr01celadm01: Flash cache qr01celadm01_FLASHCACHE successfully created

qr01celadm02: Flash cache qr01celadm02_FLASHCACHE successfully created

qr01celadm03: Flash cache qr01celadm03_FLASHCACHE successfully created

 

9 - Verificamos

[celladmin@qr01celadm01 ~]$ dcli -c qr01celadm01,qr01celadm02,qr01celadm03 cellcli -e list cell attributes flashCacheMode

qr01celadm01: WriteThrough

qr01celadm02: WriteThrough

qr01celadm03: WriteThrough