centos下部署tomcat，啟動運行一直列印下面的資訊：
16-Jun-2020 09:51:25.569 資訊 [C3P0PooledConnectionPoolManager[identityToken->z8kfltaa1eip1u0awv5bw|71f1dbf1]-HelperThread-#1] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load [oracle/sql/converter_xcharset/lx20354.glb]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [oracle/sql/converter_xcharset/lx20354.glb]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1372)
at org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClassLoaderBase.java:1042)
at java.lang.Class.getResource(Class.java:2267)
at oracle.sql.ConverterArchive.readObj(ConverterArchive.java:395)
at oracle.sql.converter.CharacterConverterJDBC.getInstance(CharacterConverterJDBC.java:144)
at oracle.sql.converter.CharacterConverterFactoryJDBC.make(CharacterConverterFactoryJDBC.java:45)
at oracle.sql.CharacterSetWithConverter.getInstance(CharacterSetWithConverter.java:97)
at oracle.sql.CharacterSetFactoryThin.make(CharacterSetFactoryThin.java:129)
at oracle.sql.CharacterSet.make(CharacterSet.java:514)
at oracle.jdbc.driver.DBConversion.init(DBConversion.java:169)
at oracle.jdbc.driver.DBConversion.<init>(DBConversion.java:120)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1135)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:320)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:546)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:236)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:146)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:195)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:184)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1086)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:648)
網上關于這個資訊的解決方案大概有下面幾種：
1. jar包沖突。我用的是oracle，只有一個ojdbc6.jar，也不可能沖突，其他jar包也好像沒有沖突的地方
2. 資料庫用戶密碼過期。已經核實狀態是正常的，密碼沒有過期
3. 將oracle的jar包移動到tomcat下的lib目錄。已復制了一份ojdbc6.jar包過去，但是問題依舊。
請教各位大神，還有什么其他可能的問題嗎？
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