Sqlplus里如何调用Shell脚本？待整理

自己封装的一个shell脚本，关键是如何调用呢？求助！

#!/bin/sh 
function createOracleInstance(){
    tableSpace=$1
    tempTableSpace=${tableSpace}"_temp"
    dataTableSpace=${tableSpace}"_data"
    user=$2
    pwd=$3

    #临时表空间
    create temporary tablespace ${tempTableSpace}
    tempfile '/u01/datas/${tempTableSpace}.dbf'
    size 50m
    autoextend on
    next 50m maxsize 20480m
    extent management local;

    #创建数据表空间
    create tablespace ${dataTableSpace}
    logging
    datafile '/u01/datas/${dataTableSpace}.dbf'
    size 50m
    autoextend on
    next 50m maxsize 20480m
    extent management local;

    #创建用户
    create user ${user}
      identified by "${pwd}"
      default tablespace ${dataTableSpace}
      temporary tablespace ${tempTableSpace}
      profile DEFAULT;
    grant connect to ${user};
    grant dba to ${user};
    grant exp_full_database to ${user};
    grant imp_full_database to ${user};
    grant resource to ${user};
    grant unlimited tablespace to ${user};
    echo "临时表空间名为${tempTableSpace},数据表空间为 ${dataTableSpace},用户名：${user},密码：${pwd}"
}
sqlplus / as sysdba
createOracleInstance $1 $2 $3

因为有sqlplus / as sysdba等命令，后面调用语句被中断了，是不是有新窗口进入导致的，如果去掉sqlplus / as sysdba，手工执行该命令后进入sql命令行，又该如何调用Shell脚本呢？