Clean and disable MDS information from WLS

Clean 
Steps:

• Remove MDS folder in %USER_DIR%\system11.1.1.3.37.56.60\o.mds.dt\adrs
• Remove temp folder in %USER_DIR%\system11.1.1.3.37.56.60\DefaultDomain\servers\DefaultServer\tmp
• Remove deployed applications in %USER_DIR%\system11.1.1.3.37.56.60\o.j2ee\drs

where $USER_DIR is the windows user directory
eg.
$USER_DIR=C:\Documents and Settings\spiros\Application Data\JDeveloper

Disable

 Remove check from "Enable User Customazation" check box.

TROUBLESHOOTING: oracle.mds.exception.MDSRuntimeException: MDS-00521: error while reading document...

Solution:

Clean MDS directory (see related post)