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Error Occurred While Processing Request

Error Executing Database Query.

Could not create connection to database server. Attempted reconnect 3 times. Giving up.
 
The error occurred in D:/wwwroot/autopubli/Webkit/Templates/suzukimoto985/vermietung.cfm: line 29
 
27 :     SELECT	UniqueID
28 :     FROM	kunden
29 :     WHERE	aCommNr = '#thisID#'
30 : </cfquery>
31 :
SQLSTATE   08001
SQL    SELECT UniqueID FROM kunden WHERE aCommNr = '310902'
DATASOURCE   Motorradhandel
Resources:

Browser   ColdFusion
Remote Address   10.196.31.1
Referrer  
Date/Time   06-Dec-23 09:08 AM
Stack Trace
at cfvermietung2ecfm1319872019.runPage(D:/wwwroot/autopubli/Webkit/Templates/suzukimoto985/vermietung.cfm:29) 

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:395)
	at com.mysql.jdbc.Util.getInstance(Util.java:370)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:999)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:973)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:959)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:904)
	at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2369)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2290)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:818)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:31)
	at sun.reflect.GeneratedConstructorAccessor49.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:395)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
	at coldfusion.server.j2ee.sql.pool.JDBCPool.createPhysicalConnection(JDBCPool.java:614)
	at coldfusion.server.j2ee.sql.pool.ConnectionRunner$RunnableConnection.run(ConnectionRunner.java:67)
	at java.lang.Thread.run(Unknown Source)
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
	at sun.reflect.GeneratedConstructorAccessor512.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:395)
	at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1105)
	at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:357)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2463)
	at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2308)
	... 12 more
Caused by: java.net.ConnectException: Connection refused: connect
	at java.net.DualStackPlainSocketImpl.connect0(Native Method)
	at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
	at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
	at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
	at java.net.PlainSocketImpl.connect(Unknown Source)
	at java.net.SocksSocketImpl.connect(Unknown Source)
	at java.net.Socket.connect(Unknown Source)
	at java.net.Socket.connect(Unknown Source)
	at java.net.Socket.<init>(Unknown Source)
	at java.net.Socket.<init>(Unknown Source)
	at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:243)
	at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:307)
	... 14 more