11G RAC 修改 SGA PGA

 

vm.min_free_kbytes = 2147484 參數，這幾個機器都是512的內存。

主備庫建立pfile文件

create pfile='/tmp/pfile0808.ora' from spfile;

備庫取消應用日誌

alter database recover managed standby database cancel;---取消應用

主庫執行變動參數語句

alter system set sga_target=270G scope=spfile sid='*';

alter system set pga_aggregate_target=90G scope=both sid='*';

shutdown immediate

 

--回退---

startup pfile='/tmp/pfile0808.ora';
create spfile from pfile='/tmp/pfile0808.ora';

shutdown immediate

startup

備庫應用日誌

alter database recover managed standby database using current logfile disconnect from session;

Best Practices and Recommendations for RAC databases with SGA size over 100GB (文檔 ID 1619155.1)