信息: 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:1335)
at org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClassLoaderBase.java:1026)
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)
 

网上查阅各种资料，最多的一种说法是，数据库驱动包重复导致，最后检查自己项目中的数据库驱动包，没有重复包！

各种办法尝试，就是不行，

最后问题定位在数据库连接配置，数据库用户密码过期导致：

select * from dba_users; 查看当前数据库所有用户的信息（状态）；
然后将自己项目连接的数据库用户密码重新激活，问题解决
alter user user_name identified by password