java.sql.SQLException: ORA-00604: error occurred at recursive SQL level 1

ORA-12705: Cannot access NLS data files or invalid environment specified

at oracle.jdbc.driver.DatabaseError.throwSqlException(java.lang.String, java.lang.String, int) (Unknown Source)

at oracle.jdbc.driver.T4CTTIoer.processError(boolean, oracle.jdbc.driver.OracleStatement) (Unknown Source)

at oracle.jdbc.driver.T4CTTIoer.processError(boolean) (Unknown Source)

at oracle.jdbc.driver.T4CTTIoer.processError() (Unknown Source)

at oracle.jdbc.driver.T4CTTIoauthenticate.receiveOauth() (Unknown Source)

at oracle.jdbc.driver.T4CConnection.logon() (Unknown Source)

at oracle.jdbc.driver.PhysicalConnection.PhysicalConnection(java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.util.Properties, oracle.jdbc.driver.OracleDriverExtension) (Unknown Source)

at oracle.jdbc.driver.T4CConnection.T4CConnection(java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.util.Properties, oracle.jdbc.driver.OracleDriverExtension) (Unknown Source)

at oracle.jdbc.driver.T4CDriverExtension.getConnection(java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.util.Properties) (Unknown Source)

at oracle.jdbc.driver.OracleDriver.connect(java.lang.String, java.util.Properties) (Unknown Source)

at java.sql.DriverManager.getConnection(java.lang.String, java.util.Properties) (/usr/lib/libgcj.so.6.0.0)

at java.sql.DriverManager.getConnection(java.lang.String, java.lang.String, java.lang.String) (/usr/lib/libgcj.so.6.0.0)

at MakeConnection.MakeConnection() (Unknown Source)

at Customer3.isUNameExit(java.lang.String) (Unknown Source)

at Customer3.insertCustomer(Customer) (Unknown Source)

at Signup.processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) (Unknown Source)

at Signup.doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) (Unknown Source)

at javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) (Unknown Source)

at javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse) (Unknown Source)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) (Unknown Source)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) (Unknown Source)

at filters.ExampleFilter.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain) (Unknown Source)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) (Unknown Source)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) (Unknown Source)

at org.apache.catalina.core.StandardWrapperValve.invoke(org.apache.catalina.Request, org.apache.catalina.Response, org.apache.catalina.ValveContext) (Unknown Source)

at org.apache.catalina.core.StandardValveContext.invokeNext(org.apache.catalina.Request, org.apache.catalina.Response) (Unknown Source)

java.lang.NullPointerException

at java.lang.Object.getClass() (/usr/lib/libgcj.so.6.0.0)