db#(No operations allowed after connection closed.)
Failed to validate connection com.mysql.jdbc.JDBC4Connection@75dc8e4c (No operations allowed after connection closed.). Possibly consider using ...
原文：ExecuteNonQuery requires an open and available Connection. The connection's current state is closed.
今天調試一個監控程序，放到環境里發現不寫庫，於是給SQL執行類異常事件做了個日志，發現報： ExecuteNonQuery requires an open and available Connection. The connection s current state is closed. 左看右看，沒問題呀，后來才想起，using里沒有執行db.Open，打開數據庫連接。 ...
2012-08-17 23:50 0 4125 推薦指數：
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