I don't know which category this problem falls:

I cannot make a connection in my SQL Developer when I was trying to access my Oracle XE installed in my Ubuntu. I am getting this error:

java.sql.SQLException
ORA-00604: error occured at recursive SQL level 1
ORA-12705: Cannot access NLS data files or invalid environment specified

How do I fix this error??

Below is the complete error description I am seeing:

com.solyp.sql.SQLStates missing resource for sql.state.60000
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(DatabaseError.java:112)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:283)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:278)
at oracle.jdbc.driver.T4CTTIoauthenticate.receiveOauth(T4CTTIoauthenticate.java:785)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:362)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:414)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at com.solyp.sqldeveloper.base.driver.DefaultDriverContext$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.solyp.sqldeveloper.base.driver.DefaultDriverContext.getDynamicConnection(Unknown Source)
at com.solyp.sqldeveloper.base.driver.DefaultDriverContext.getConnection(Unknown Source)
at com.solyp.sqldeveloper.oracleprovider.connector.OracleConnector.createConnection(Unknown Source)
at com.solyp.sqldeveloper.base.connector.AbstractConnector.getSharedConnection(Unknown Source)
at com.solyp.sqldeveloper.mckoiprovider.adapter.MckoiAdapterFactory.getAdapterSupportLevel(Unknown Source)
at com.solyp.sqldeveloper.client.J.C.A(Unknown Source)
at com.solyp.sqldeveloper.client.B.C$_A.run(Unknown Source)
at com.solyp.sqldeveloper.base.util.WorkerDialog$WorkerThread.run(Unknown Source)

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