linux安装启动问题

[开发经理]

SQL> startup;
ORACLE instance started.

Total System Global Area 167772160 bytes
Fixed Size 1218292 bytes
Variable Size 62916876 bytes
Database Buffers 96468992 bytes
Redo Buffers 7168000 bytes
ORA-00205: error in identifying control file, check alert log for more info


alert log 内容如下：

The value of parameter db_block_buffers is below
the required minimum
The new value is ((4MB * the number of cpus)/db_block_size)


SQL> shutdown immediate
ORA-01507: database not mounted


ORACLE instance shut down.