Android Question Remote Database Connector - Java webserver- Help me - Aiuto

ENG
Hello,
I followed the RDC tutoria for connect to any remote DB.
At the end, the tutorial tells to do a test.


But instead of giving me connection ok, it gives me error.
I don't understand.
Can anyone help me?
Thank you so much.
Alessio
Down the error.

ITA
Ciao a tutti.
ho seguito il tutorial RDC Connect to any remote DB.
Alla fine del tutorial ti dice di fare un test.


Però invece di darmi connessione ok, mi da il seguente errore, ma non riesco a capire il perché.
Qualcuno mi può aiutare?
Grazie Mille.
Alessio
Posto di seguito l errore.

------------------------------------------------------------------------------------------------------
C:\Program Files\Java\jdk1.8.0_161>"C:\Program Files\Java\jdk1.8.0_161\bin\java"
-Xmx256m -cp .;libs\*;jdbc_driver\* anywheresoftware.b4a.remotedatabase.RemoteS
erver
B4A Remote Database Connecter (version 0.9)
loading: C:\Program Files\Java\jdk1.8.0_161\config.properties
2018-02-08 10:46:48.412:INFO::jetty-7.4.2.v20110526
2018-02-08 10:46:48.506:INFO::started o.e.j.s.ServletContextHandler{/,null}
feb 08, 2018 10:46:48 AM com.mchange.v2.log.MLog <clinit>
INFORMAZIONI: MLog clients using java 1.4+ standard logging.
feb 08, 2018 10:46:50 AM com.mchange.v2.c3p0.C3P0Registry banner
INFORMAZIONI: Initializing c3p0-0.9.2.1 [built 20-March-2013 11:16:28 +0000; deb
ug? true; trace: 10]
2018-02-08 10:46:51.064:INFO::Started SelectChannelConnector@0.0.0.0:17178 START
ING
feb 08, 2018 10:47:07 AM com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource g
etPoolManager
INFORMAZIONI: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSourc
e [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000
, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailu
re -> false, checkoutTimeout -> 20000, connectionCustomizerClassName -> null, co
nnectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dat
aSourceName -> 1hgeby99twesbjv73x8q1|3cb5cdba, debugUnreturnedConnectionStackTra
ces -> false, description -> null, driverClass -> net.ucanaccess.jdbc.Ucanaccess
Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false
, identityToken -> 1hgeby99twesbjv73x8q1|3cb5cdba, idleConnectionTestPeriod -> 6
00, initialPoolSize -> 3, jdbcUrl -> jdbc:ucanaccess://c:/alessio/lavori/bar_mob
ile/db/bar.accdb, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdle
Time -> 1800, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatement
s -> 150, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads ->
3, preferredTestQuery -> null, properties -> {}, propertyCycle -> 0, statementC
acheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnecti
onOnCheckout -> false, unreturnedConnectionTimeout -> 0, userOverrides -> {}, us
esTraditionalReflectiveProxies -> false ]
feb 08, 2018 10:47:07 AM com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolT
hread run
AVVERTENZA: An Error forced the closing of Thread[C3P0PooledConnectionPoolManage
r[identityToken->1hgeby99twesbjv73x8q1|3cb5cdba]-HelperThread-#2,5,main]. Will a
ttempt to reconstruct, but this might mean that something bad is happening.
java.lang.NoClassDefFoundError: com/healthmarketscience/jackcess/util/ErrorHandl
er
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(Driver
ManagerDataSource.java:112)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:129)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:156)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:145)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1086)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:648)
Caused by: java.lang.ClassNotFoundException: com.healthmarketscience.jackcess.ut
il.ErrorHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more

feb 08, 2018 10:47:07 AM com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolT
hread run
AVVERTENZA: An Error forced the closing of Thread[C3P0PooledConnectionPoolManage
r[identityToken->1hgeby99twesbjv73x8q1|3cb5cdba]-HelperThread-#0,5,main]. Will a
ttempt to reconstruct, but this might mean that something bad is happening.
java.lang.NoClassDefFoundError: com/healthmarketscience/jackcess/util/ErrorHandl
er
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(Driver
ManagerDataSource.java:112)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:129)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:156)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:145)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1086)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:648)
Caused by: java.lang.ClassNotFoundException: com.healthmarketscience.jackcess.ut
il.ErrorHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more

Exception in thread "C3P0PooledConnectionPoolManager[identityToken->1hgeby99twes
bjv73x8q1|3cb5cdba]-HelperThread-#2" java.lang.NoClassDefFoundError: com/healthm
arketscience/jackcess/util/ErrorHandler
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(Driver
ManagerDataSource.java:112)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:129)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:156)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:145)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1086)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:648)
Caused by: java.lang.ClassNotFoundException: com.healthmarketscience.jackcess.ut
il.ErrorHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more
Exception in thread "C3P0PooledConnectionPoolManager[identityToken->1hgeby99twes
bjv73x8q1|3cb5cdba]-HelperThread-#0" java.lang.NoClassDefFoundError: com/healthm
arketscience/jackcess/util/ErrorHandler
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(Driver
ManagerDataSource.java:112)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:129)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:156)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:145)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1086)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:648)
Caused by: java.lang.ClassNotFoundException: com.healthmarketscience.jackcess.ut
il.ErrorHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more
feb 08, 2018 10:47:07 AM com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolT
hread run
AVVERTENZA: An Error forced the closing of Thread[C3P0PooledConnectionPoolManage
r[identityToken->1hgeby99twesbjv73x8q1|3cb5cdba]-HelperThread-#1,5,main]. Will a
ttempt to reconstruct, but this might mean that something bad is happening.
java.lang.NoClassDefFoundError: com/healthmarketscience/jackcess/util/ErrorHandl
er
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(Driver
ManagerDataSource.java:112)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:129)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:156)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:145)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1086)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:648)
Caused by: java.lang.ClassNotFoundException: com.healthmarketscience.jackcess.ut
il.ErrorHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more

Exception in thread "C3P0PooledConnectionPoolManager[identityToken->1hgeby99twes
bjv73x8q1|3cb5cdba]-HelperThread-#1" java.lang.NoClassDefFoundError: com/healthm
arketscience/jackcess/util/ErrorHandler
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(Driver
ManagerDataSource.java:112)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:129)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:156)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:145)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1086)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:648)
Caused by: java.lang.ClassNotFoundException: com.healthmarketscience.jackcess.ut
il.ErrorHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more
java.sql.SQLException: An attempt by a client to checkout a Connection has timed
out.
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:118)
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:77)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConne
ction(C3P0PooledConnectionPool.java:687)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(A
bstractPoolBackedDataSource.java:140)
at anywheresoftware.b4a.remotedatabase.Servlet.doGet(Servlet.java:64)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538
)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java
:478)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandl
er.java:937)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:
406)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandle
r.java:871)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.j
ava:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper
.java:110)
at org.eclipse.jetty.server.Server.handle(Server.java:346)
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.
java:589)
at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete
(HttpConnection.java:1048)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)

at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:41
1)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEn
dPoint.java:535)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEnd
Point.java:40)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool
.java:529)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.mchange.v2.resourcepool.TimeoutException: A client timed out whil
e waiting to acquire a resource from com.mchange.v2.resourcepool.BasicResourcePo
ol@3cf85b1b -- timeout at awaitAvailable()
at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicRes
ourcePool.java:1416)
at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(
BasicResourcePool.java:606)
at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicR
esourcePool.java:526)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutAndMarkConn
ectionInUse(C3P0PooledConnectionPool.java:755)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConne
ction(C3P0PooledConnectionPool.java:682)
... 21 more
Terminare il processo batch (S/N)?

-------------------------------------------------------------------------------------------------------