Cause:This is a catchall internal error message for Oracle program exceptions.It indicates that a process has met a low-level,unexpected condition.Various causes of this message include:
Time-outs（超时）
File corruption(文件太老)
Failed data checks in memory（内存检索失败）
Hardware,memory,or I/O errors（硬件、内存或者磁盘错误）
Incorrectly restored files（错误的重建文件）
ORA-03113：end-of-file on communication channel
产生原因：通讯不正常结束，从而导致通讯通道终止
解决方法：1>.检查是否有服进程不正常死机，可从alert.log得知
2>.检查sql*Net Driver是否连接到ORACLE可执行程序
3>.检查服务器网络是否正常，如网络不通或不稳定等
4>.检查同一个网上是否有两个同样名字的节点
5>.检查同一个网上是否有重复的IP地址
相应的英文如下：
Cause:An unexpected end-of-file was processed on the communication channel.The problem could not be handled by the Net8,two task,software.This message could occur if the shadow two-task process associated with a Net8 connect has terminated abnormally,or if there is a physical failure of the interprocess communication vehicle,that is,the network or server machine went down.
Action:If this message occurs during a commection attempt,check the setup files for the appropriate Net8 driver and confirm Net8 software is correctly installed on the server.If the message occurs after a connection is well established,and the error is not due to a physical failure,check if a trace file was generated on the server at failure time.Existence of a trace file may suggest an Oracle internal error that requires the assistance of customer support.
Cause:The table or view entered does not exist,a synonym that is jnot allowed here was used,or a view was referenced where a table is required.Existing user tables and views can be listed by querying the data dictionary.Certain privileges may required to access the table.If an application returned this message,the table the application tried to access does not exist in the database,or the application does not have access to it.
Action:Check each of the following:
The spelling of the table or view name.
That a view is not specified where a table is required
That an existing table or view name exists.
Contact the database administrator if the table needs to be created or if user or application priviledes are required to access the table.
Also, if attempting to access a table or view in another schema,make certain thecorrect schema is referenced and that access to the object is granted.
ORA-01598:rollback segment “name” is not online
Cause:The rollback segment was taken offline either manually or by SMON.
Action:Check the status of the rollback segment in DBA_ROLLBACK_SEGS.
ORA-1636: rollback segment “name” is already online
Cause:A rollback segment can only be used by one instance and an instance is trying to bring a rollback segment online that is already in use.
Action:Check that the values set in the initialization parameter file for parameters ROLLBACK_SEGMENTS,ROLLBACK_SEGMENT_INITIAL,a
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正在看的ORACLE教程是:ORACLE常见错误代码的分析与解决（三）。nd ROLLBACK_SEGMENT_COUNT are correctly set for the instance whiththe problem,Also check that the instance is using the correct initialization parameter file.Make sure you are not confused about the difference between private and public rollback segments.See the Oracle8 Server Administrator's Guide for more information about using rollback segments in paraller mode.
