单位一套测试oracle数据库，本想用dbca看看数据库配置信息，当然也是手闲得慌，谁想到竟然出现下面的画面。创建新的数据，配置数
一、问题描述：单位一套测试oracle数据库，本想用dbca看看数据库配置信息，当然也是手闲得慌，谁想到竟然出现下面的画面。创建新的数据，配置数据库操作按键是灰色，不让点击。这是什么情况，实例没有启动，不可能啊 ，刚刚还登录过呢。好吧，开始处理过程之旅。
二、处理方法：
1. 检查/etc/oratab文件 ，发现关于路径的信息都是之前安装的oracle软件目录（/u01/.....）与现在的软件目录（/home/oracle/app/.....）不一致。
修改前：
[oracle@tora01 etc]$ cat oratab
#
# this file is used by oracle utilities.  it is created by root.sh
# and updated by either database configuration assistant while creating
# a database or asm configuration assistant while creating asm instance.
# a colon, ':', is used as the field terminator.  a new line terminates
# the entry.  lines beginning with a pound sign, '#', are comments.
#
# entries are of the form:
#  $oracle_sid:$oracle_home::
#
# the first and second fields are the system identifier and home
# directory of the database respectively.  the third filed indicates
# to the dbstart utility that the database should , y, or should not,
# n, be brought up at system boot time.
#
# multiple entries with the same $oracle_sid are not allowed.
#
#
holytest:/u01/app/oracle/product/11.2.0/db_1:n
修改后：
[oracle@tora01 etc]$ cat oratab
#
# this file is used by oracle utilities.  it is created by root.sh
# and updated by either database configuration assistant while creating
# a database or asm configuration assistant while creating asm instance.
# a colon, ':', is used as the field terminator.  a new line terminates
# the entry.  lines beginning with a pound sign, '#', are comments.
#
# entries are of the form:
#  $oracle_sid:$oracle_home::
#
# the first and second fields are the system identifier and home
# directory of the database respectively.  the third filed indicates
# to the dbstart utility that the database should , y, or should not,
# n, be brought up at system boot time.
#
# multiple entries with the same $oracle_sid are not allowed.
#
#
holytest:/home/oracle/app/oracle/product/11.2.0/dbhome_1:n
2. 再次启动dbca进行验证，发现恢复正常
三、总结：一次小小的发现，对oratab文件的了解又深入了一点点。该文件最后那个n，如果你需要数据自动启动的话，要改为y，这些都是经验啊，还要继续努力学习。
本文永久更新链接地址：
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