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<p><FONT class=normalfont><B><font color=blue>Oracle常见错误代码的分析与解决二</font></B></FONT><BR><FONT class=smallfont color=#ff9900>2004-04-23 15:18 pm</FONT><BR><FONT class=normalfont>作者：UP.Linux<br>来自：Linux知识宝库<br>联系方式：无名<br><br>适当增大缺省值的大小有可能解决出现的错误问题，也可以通过修改用户的临时表空间大小来解决这个问题：<br>
<br>
SQL>ALTER USER username TEMPORARY TABLESPACE new_tablespace_name;<br>
<br>
使用ALTER TABLESPACE命令，一但完成，所增加的空间就可使用，无需退出数据库或使表空间脱机，但要注意，一旦添加了数据文件，就不能再删除它，若要删除，就要删除表空间。<br>
<br>
一个报错例子如下：<br>
<br>
ORA-1652:unable to extend temp segment by 207381 in tablespace TEMPSPACE<br>
<br>
相应的英文如下：<br>
<br>
Cause: Failed to allocate extent for temp segment in tablespace<br>
<br>
Action:Use the ALTER TABLESPACE ADD DATAFILE statement to add one or more files to the specified tablespace or create the object in another tablespace.<br>
<br>
ORA-01578:Oracle data block corrupted(file # num,block # num)<br>
<br>
产生原因：当ORACLE访问一个数据块时，由于1、硬件的I/O错误；2、操作系统的 I/O错误或缓冲问题；3、内存或paging问题；4、ORACLE试图访问一个未被格式化的系统块失败；5、数据文件部分溢出等上述几种情况的一种引起了逻辑坏块或者物理坏块，这时就会报ORA-01578的错误。<br>
<br>
解决方式：由于ORACLE只有在访问到有问题的数据文件时才会报错，所以报错的时间有可能会比实际出错的时间要晚，如果ORA-01578出错信息提示数据坏块指向的是用户自己的数据文件，则用以下方法来解决：<br>
<br>
如果通过下面的SQL语句查出的坏块出现有索引上，则只需重建索引即可<br>
<br>
SQL>Select owner,segment_name,segment_type from dba_extents where file_id= and between block_id and block_id+blocks-1;<br>
<br>
(和分别是ORA-01578报出的坏块出现的文件号和块号)<br>
<br>
如果坏块出现在表上，先用以下语句分析是否为永久性坏块（建议多执行一两次，有助于鉴别数据坏块是永久性的（硬盘上的物理坏块）还是随机性的（内存或硬件错误引起））： SQL>Analyze table validate structure cascade;<br>
<br>
执行该命令后，可能会出现以下的结果：<br>
<br>
ORA-01578：与原先错误信息有相同的参数，为永久性的物理或逻辑坏块；与原先错误信息有不同的参数，可能与内存，page space和I/O设备有关。<br>
<br>
如果用户有此表的最新备份，那么最好是用此备份来恢复此表，或者使用event 10231来取出坏块以外的数据：<br>
<br>
<1>.先关闭数据库<br>
<br>
<2>.编辑init.ora文件，加入：<br>
<br>
event=”10231 trace name context forever,level 10”<br>
<br>
<3>.startup restrict<br>
<br>
<4>.创建一个临时表：SQL>create table errortemp as select * from error;(error是坏表的表名)<br>
<br>
<5>.把event从init.ora文件中删掉并重起数据库<br>
<br>
<6>.rename坏表，把临时表rename成坏表的表名<br>
<br>
<7>.创建表上的INDEX等<br>
[返回列表]<br>
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