NicholasNoise commented on a change in pull request #71:
URL: https://github.com/apache/logging-log4net/pull/71#discussion_r538174819



##########
File path: src/log4net/Appender/AdoNetAppender.cs
##########
@@ -553,8 +553,17 @@ protected virtual void SendBuffer(IDbTransaction dbTran, 
LoggingEvent[] events)
                                        {
                                                dbCmd.Transaction = dbTran;
                                        }
-                                       // prepare the command, which is 
significantly faster
-                                       dbCmd.Prepare();
+
+                                       try
+                                       {
+                                               // prepare the command, which 
is significantly faster
+                                               dbCmd.Prepare();
+                                       }
+                                       catch (Exception)
+                                       {
+                                               // Ignore exception

Review comment:
       I've investigated it. The simple _why_ is to prepare a valid command 
instead of invalid one without parameters and values.
   Also tracked down to inner command cache, so it is not necessary to prepare 
command.




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