WebLogic ORA-03111错误的处理过程
ORA-03111错误,导致系统无法运行问题现象描述: 系统在运行时报ldquo;java.sql.SQLException: ORA-03111rdquo;错误。问题分析:
ORA-03111错误,导致系统无法运行
问题现象描述: 系统在运行时报“java.sql.SQLException: ORA-03111”错误。
问题分析:
通过在metalink对故障代码进行定位。文档号[ID 1219453.1]与客户的故障信息类似,,“ORA-03111: break received on communication channel”是由于数据库服务器端的监听进程的配置linstener.ora的SDU设置不够大造成的。
错误基本的含义是“缓冲区不够大,无法发送数据。”对于Oracle Net,这个缓冲区是会话数据单元(Session Data Unit value, SDU). SDU简单来说,就是一个用来复制数据到Socket缓冲区并把数据传给客户端的服务器内部的缓冲区。
ORA-3111错误一般可以忽略掉,因为它不会导致更多的问题或者Core dumps。要消除这些错误,只需要增大 SDU的配置。
解决方案:
增大SDU.
修改的是Oracle数据库服务器监听进程的配置listen.ora
LISTENER.ORA:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SDU = 16384)
(TDU = 16384)
(SID_NAME =XXX)
(ORACLE_HOME =XXXX)))
SDU的取值范围是512到32768,默认是2048,本次建议改为16384。
有关SDU可以参考metalink中SQL*Net Packet Sizes (SDU & TDU Parameters) [ID 44694.1]

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