我没碰到过这个问题,上网搜了一下,大概是
1,你的这个字段是不是变过?
2,log大小不够?
3,这个比较怪,说是网络宽带小,不过这个现在应该存在的可能性不大,都是宽带了。
4,号称是oracle的一个bug号为1686483的bug,你再自己确定一下,如果是的话需要打补丁。
另外,官方文档上是说
To resolve ORA-01406, you should try to:
1,expand the column buffer area so that it can hold the largest column value
2,check your insert syntax, allowing for appropriate processing
还有一句,自己体会一下
You should note that ORA-01406 is described in MetaLink as a bug (4546618), which has supposedly been fixed in 10.2.0.3