ORA - 12502 TNS:listener received no CONNECT_DATA from client
今天在检查listener.log的时候发现了一个错误：
23-MAR-2009 11:15:17 * 12502
TNS-12502: TNS:listener received no CONNECT_DATA from client
23-MAR-2009 11:17:34 * 12502
TNS-12502: TNS:listener received no CONNECT_DATA from client
23-MAR-2009 11:17:52 * 12502
TNS-12502: TNS:listener received no CONNECT_DATA from client
The error indicates that the Listener did not recieve the complete information of the connect string, it lacks the CONNECT_DATA section.
查了一下相关资料，认为有些内部连接或者一些工具的连接方式中没有包含connect_data内容，就会出现这种错误，或者说是提示警告。由于客户端没有发生任何异常连接，此问题没有频繁的出现，再此记录一下。
metalink_id:
| Subject: | TroubleShooting Guide For ORA - 12502 TNS:listener received no CONNECT_DATA from client | |||
| Doc ID: | 453505.1 | Type: | TROUBLESHOOTING | |
| Modified Date : | 17-NOV-2008 | Status: | PUBLISHED | |
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