ORA-06922: CMX: bad write length
Cause: internal error in CMX
Action: contact your customer support representative
。
ORA-06922: CMX: bad write length 错误指的是一个连接会话（也就是通过一个会话无法写入/读取完整的数据块）。
ORA-06922 is thrown when there is an attempt to write or read a data block on the connection and the write or read length is determined to be invalid.
ORA-06922 could be caused by a variety of reasons, including but not limited to, communications errors, incorrect data blocks being written or read, or an unsupported write or read length.
1. 确认网络连接是否正常；
2. 检查数据库表、数据块是否被正确地读取或写入；
3. 检查要读取或写入的字节数是否正确；
4. 尝试使用支持的读取/写入长度；
5. 查找并根据堆栈跟踪查明特定的原因。