ORA-00209错误是什么错？信息如下：
SQL> startup mount
ORACLE 例程已经启动。
Total System Global Area219224828 bytes
Fixed Size
453372 bytes
Variable Size
192937984 bytes
Database Buffers 25165824 bytes
Redo Buffers
667648 bytes
ORA-00209: ???????????????????????
SQL> select * from V$version;
BANNER
-----------------------------------------------------------
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
PL/SQL Release 9.2.0.1.0 - Production
CORE9.2.0.1.0 Production
TNS for 32-bit Windows: Version 9.2.0.1.0 - Production
NLSRTL Version 9.2.0.1.0 - Production
SQL>
ORA-00209: control file blocksize mismatch, check alert log for more info.
*Cause: The block size in the control file header does not match the size specified in the DB_BLOCK_SIZE parameter.
*Action: Look at the alert log for more information.
看看alert_SID.log文件。是不是你手工修改了db_block_size？
Sun Apr 20 10:59:57 2003
ALTER DATABASE MOUNT
Sun Apr 20 10:59:57 2003
ORA-00218: block size 4096 of controlfile does not match DB_BLOCK_SIZE (8192)
ORA-00202: controlfile: '/oracle/oradata/red/control01.ctl'
Sun Apr 20 11:00:00 2003
ORA-209 signalled during: ALTER DATABASE MOUNT...
