【oracle案例】ORA-01658
ORA-01658: unable to create INITIAL extent for segment in tablespace string
Cause: Failed to find sufficient contiguous space to allocate INITIAL extent for segment being created.
Action: Use ALTER TABLESPACE ADD DATAFILE to add additional space to the tablespace or retry with a smaller value for INITIAL
问题原因：
a） 表空间不足，没有设置为自动增长
：表空间是自增长的，a)被排除
b） 磁盘空间不足，oracle无法分配空间
：查看物理磁盘空间，发现使用率为100%.
解决方法：
a) 尝试连接数据库，报错ORA-01658、ORA-09817 和操作系统错误28，操作系统没有足够的空间
b) 尝试删除归档日志，oracle没有开启archive
c) 尝试删除备份文件，没有备份
d) 查看flash_recovery_area空间大小，占用空间很小，没有删除的必要
e) 查看alert.log日志文件，无有用的报错信息
f) 咨询测试的同事，他们是否可以连接数据库，测试的同事可以连接数据库，并且可以在其它实例上创建表，现在的问题是只有sid01创建表的时候报ORA-01658
g) 尝试让测试的同事解决，我给他提供操作方法
1) 修改表空间大小
查看表空间适应情况，发现有一个表空间分配了5G多，使用率不到1G；
alter database datafile ... resize 这个表空间的数据文件。
h) 可以使用sqlplus连接数据库
删除udump、bdump、
In this Document
Symptoms
Cause
Solution
References
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This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process, and therefore has not been subject to an independent technical review.
2. Applies to:
Oracle Server - Enterprise Edition - Version: 8.1.7.4 to 11.1
This problem can occur on any platform.
3. Symptoms
When Startin the database, below Errors occurred
ERROR:
ORA-09817: Write to audit file failed.
HP-UX Error: 28: No space left on device
ORA-09945: Unable to initialize the audit trail file
4. Cause
Running df -k found that the Mount point where Oracle is installed is full causing the Startup to throw errors
5. Solution
To implement the solution, please execute the following steps::
Free some space from the Mountpoint
Files that can be deleted are tracefiles in the UDUMP / BDUMP / CDUMP
Note: its advisable to backup the files before they are dropped since they might be useful in future
6. References
NOTE:387200.1 - Ora-2002 Ora-9817 Error While Writing To Audit Trail
参考链接：
oracle 压缩 http://www.oracle-base.com/articles/11g/table-compression-enhancements-11gr1.php
空间限额：
http://www.qqread.com/oracle/2010/03/b491150.html
http://database.ctocio.com.cn/142/12241642.shtml