Oracle JDeveloper 9.0.4, 9.0.5, and 10.1.2 stores cleartext passwords in (1) IDEConnections.xml, (2) XSQLConfig.xml and (3) settings.xml, which allows local users to obtain sensitive information.
https://exchange.xforce.ibmcloud.com/vulnerabilities/21342
http://www.red-database-security.com/advisory/oracle_jdeveloper_plaintext_password.html
http://www.oracle.com/technology/deploy/security/pdf/cpujul2005.html