错误可能是两种:
1、oracle没有启动。
2、没有足够的空间
要修改必须看看具体情况。你的oracle可以启动吗?
ORA-01034: Oracle not available
Cause: Oracle was not started up. Possible causes include the following:
The SGA requires more space than was allocated for it.
The operating system variable pointing to the instance was improperly defined.
Action: Refer to accompanying messages for possible causes and correct the problem mentioned in the other messages. Retry after Oracle has been initialized.
If Oracle has been initialized, then on some operating systems, verify that Oracle was linked correctly. See the platform-specific Oracle documentation.
试试看这样配置参数
在文件/etc/system中增加下面设置
set shmsys:shminfo_shmmax = 4294967295
set shmsys:shminfo_shmmin = 1
set shmsys:shminfo_shmmni = 100
set shmsys:shminfo_shmseg = 16
set semsys:seminfo_semmni = 100
set semsys:seminfo_semmsl = 160
set semsys:seminfo_semmns = 460
set semsys:seminfo_semopm = 100
set semsys:seminfo_semvmx = 32767
set semsys:seminfo_semmnu = 100