Linux操作系统下Oracle数据库多实例启动方式及修改内存
因为工作的需要，需要在一台Linux操作系统下安装Oracle的另外一个实例。在得到众多网友帮助之后，终于解决以下问题一，安装新的实例用Linux
因为工作的需要，需要在一台Linux操作系统下安装Oracle的另外一个实例。
在得到众多网友帮助之后，终于解决以下问题
一，，安装新的实例
用Linux账户Oracle登录，找到bin目录下的dbca，然后创建了。默认是用pfile(init.ora)方式启动的.
二，解决启动多个实例的问题。
后来需要重启，于是：
使用Oracle远程登录(telnet),然后执行
export Oracle_SID=SID2
sqlplus /nolog
conn /as sysdba
startup
三,修改SGA
首先需要修改启动方式:
CREATE SPFILE='/Oracle/SPFILESID2.ORA' FROM PFILE;
SHUTDOWN IMMEDIATE
STARTUP
ALTER SYSTEM SET SGA_MAX_SIZE=3072M SCOPE=SPFILE (scope=memory|spfile|both)
SHUTDOWN IMMEDIATE
STARTUP
ALTER SYSTEM SET SGA_TARGET=3072M
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