刚才启动测试环境下虚拟机上的oracle，启动过程没有报错，在我编译存储过程的时候报错如下：
Thu Jul 4 14:05:09 2013
Errors in file /u01/app/oracle/admin/ora10g/bdump/ora10g_smon_3319.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00376: file 2 cannot be read at this time
ORA-01110: data file 2: '/u01/oracle/oradata/ora10g/undotbs01.dbf'
Opening with internal Resource Manager plan
where NUMA PG = 1, CPUs = 2
replication_dependency_tracking turned off (no async multimaster replication found)
Starting background process QMNC
QMNC started with pid=16, OS id=3337没有搞明白这是为什么？？
看到上面提示undo文件/u01/oracle/oradata/ora10g/undotbs01.dbf，就查看了一下发现这个文件不存在。
SQL> select segment_name,status,tablespace_name from dba_rollback_segs;SEGMENT_NAME STATUS TABLESPACE_NAME
------------------------------ ---------------- ------------------------------
SYSTEM ONLINE SYSTEM
_SYSSMU4$ NEEDS RECOVERY UNDOTBS1
_SYSSMU5$ NEEDS RECOVERY UNDOTBS1
_SYSSMU6$ NEEDS RECOVERY UNDOTBS1
_SYSSMU7$ NEEDS RECOVERY UNDOTBS1
_SYSSMU8$ NEEDS RECOVERY UNDOTBS1
_SYSSMU9$ NEEDS RECOVERY UNDOTBS1
_SYSSMU10$ NEEDS RECOVERY UNDOTBS1
_SYSSMU22$ ONLINE UNDOTBS02
_SYSSMU23$ ONLINE UNDOTBS02
_SYSSMU24$ ONLINE UNDOTBS02SEGMENT_NAME STATUS TABLESPACE_NAME
------------------------------ ---------------- ------------------------------
_SYSSMU25$ ONLINE UNDOTBS02
_SYSSMU26$ ONLINE UNDOTBS02
_SYSSMU27$ ONLINE UNDOTBS02
_SYSSMU28$ ONLINE UNDOTBS02
_SYSSMU29$ ONLINE UNDOTBS02
_SYSSMU30$ ONLINE UNDOTBS02
_SYSSMU21$ ONLINE UNDOTBS02
_SYSSMU11$ OFFLINE UNDOTBS01
_SYSSMU12$ OFFLINE UNDOTBS01
_SYSSMU13$ OFFLINE UNDOTBS01
_SYSSMU14$ OFFLINE UNDOTBS01SEGMENT_NAME STATUS TABLESPACE_NAME
------------------------------ ---------------- ------------------------------
_SYSSMU15$ OFFLINE UNDOTBS01
_SYSSMU16$ OFFLINE UNDOTBS01
_SYSSMU17$ OFFLINE UNDOTBS01
_SYSSMU18$ OFFLINE UNDOTBS01
_SYSSMU19$ OFFLINE UNDOTBS01
_SYSSMU20$ OFFLINE UNDOTBS0128 rows selected.SQL>
发现正在用的是不是这一个UNDOTBS1，而是UNDOTBS02；但是UNDOTBS1却需要恢复。
百度上贴一段。。。。。
回滚表空间
有三种种情况：
1、数据库已经完全关闭（使用shutdown immediate或shutdown命令）
1) 确认数据库完全关闭
2) 修改init.ora文件,注释"rollback-segment"
3) svrmgrl> startup restrict mount
4) svrmgrl> alter database datafile filename offline drop;
5) svrmgrl> alter database open;
基于出现的结果："statement PRocessed" 转(7)；"ORA-00604,ORA-00376,ORA-01110"转(6)
6) svrmgrl> shutdown immediate
修改init.ora文件,增加如下一行：_corrupted_rollback_segments = (<roll1>,...<rolln>)
svrmgrl> startup restrict
7) svrmgrl> drop tablespace tablespace_name including contents;
8) 重建表空间及回滚段
9) svrmgrl> alter system disable restricted session;
10) 修改init.ora文件
2、数据库未完全关闭（数据库崩溃或使用shutdown abort命令关闭数据库）
1) 恢复备份
2) svrmgrl> startup mount
3) svrmgrl> select file#,name,status from v$datafile;
svrmgrl> alter database datafile filename online;
4) svrmgrl> select v1.group#,member,sequence#,first_change# from v$log v1,v$logfile v2 where v1.group#=v2.group#;
5) svrmgrl> select file#,change# from v$recover_file; #参见方案2-4
6) svrmgrl> recover datafile filename;
7) svrmgrl> alter database open;
3、数据库处于打开状态
1) 删除回滚段和表空间
2) 重建表空间和回滚段因为启动后当前库没有报错，所以就创建了pfile，然后修改pfile，添加参数写上损坏的回滚段，然后用它启动，
_CORRUPTED_ROLLBACK_SEGMENTS=(_SYSSMU4$,_SYSSMU5$,_SYSSMU6$,_SYSSMU7$,_SYSSMU8$,_SYSSMU9$,_SYSSMU10$)
，启动完之后，再删除UNDOTBS1，同时也再创建一下。完了之后，再根据pfile创建spfile，重启数据库。再次编译的时候没有报错，日志里面也没有。
drop tablespace UNDOTBS1 including contents and datafiles ;
create undo tablespace UNDOTBS1 datafile '/u01/oracle/oradata/ora10g/undotbs01.dbf' size 200m;
SQL> select segment_name,status,tablespace_name from dba_rollback_segs;SEGMENT_NAME STATUS TABLESPACE_NAME
------------------------------ ---------------- ------------------------------
SYSTEM ONLINE SYSTEM
_SYSSMU2$ ONLINE UNDOTBS1
_SYSSMU3$ ONLINE UNDOTBS1
_SYSSMU4$ ONLINE UNDOTBS1
_SYSSMU5$ ONLINE UNDOTBS1
_SYSSMU6$ ONLINE UNDOTBS1
_SYSSMU7$ ONLINE UNDOTBS1
_SYSSMU8$ ONLINE UNDOTBS1
_SYSSMU9$ ONLINE UNDOTBS1
_SYSSMU10$ ONLINE UNDOTBS1
_SYSSMU1$ ONLINE UNDOTBS1SEGMENT_NAME STATUS TABLESPACE_NAME
------------------------------ ---------------- ------------------------------
_SYSSMU22$ OFFLINE UNDOTBS02
_SYSSMU23$ OFFLINE UNDOTBS02
_SYSSMU24$ OFFLINE UNDOTBS02
_SYSSMU25$ OFFLINE UNDOTBS02
_SYSSMU26$ OFFLINE UNDOTBS02
_SYSSMU27$ OFFLINE UNDOTBS02
_SYSSMU28$ OFFLINE UNDOTBS02
_SYSSMU29$ OFFLINE UNDOTBS02
_SYSSMU30$ OFFLINE UNDOTBS02
_SYSSMU21$ OFFLINE UNDOTBS02
_SYSSMU11$ OFFLINE UNDOTBS01SEGMENT_NAME STATUS TABLESPACE_NAME
------------------------------ ---------------- ------------------------------
_SYSSMU12$ OFFLINE UNDOTBS01
_SYSSMU13$ OFFLINE UNDOTBS01
_SYSSMU14$ OFFLINE UNDOTBS01
_SYSSMU15$ OFFLINE UNDOTBS01
_SYSSMU16$ OFFLINE UNDOTBS01
_SYSSMU17$ OFFLINE UNDOTBS01
_SYSSMU18$ OFFLINE UNDOTBS01
_SYSSMU19$ OFFLINE UNDOTBS01
_SYSSMU20$ OFFLINE UNDOTBS0131 rows selected.SQL>