修改oracle内存占用

 # su oracle

    $cd $ORACLE_HOME

    $./sqlplus /nolog

    >connect / as sysdba;

    >show parameter sga; (查看内存占用情况)

      NAME                                   TYPE          VALUE
   ------------------------------------ ----------- -------------
   lock_sga                       boolean       FALSE
   pre_page_sga                   boolean       FALSE

   sga_max_size                   big integer 800M
   sga_max_size                   big integer 800M

  >alter system set sga_max_size=2048m scope=spfile;
  >alter system set sga_target=1024m scope=spfile;

alter system set memory_target=2048m scope=spfile;