If you use WebCenter Sites on Linux with Firefox, you may have hit the nasty issue where the latest Firefox update disabled your tools. These are the steps I followed to get it working again:

1. Locate your Mozilla installation plugins directory. In the example below, it is at /usr/lib64/mozilla/plugins
2. Locate your Java home. In the example below it has been set as the system variable JAVA_HOME
3. Go to the plugins directory and sudo as root
4. Create a symlink to the Java plug in
5. Important! Exit root before performing the next step or the plug-in will only be enabled for root.
6. Run jcontrol and sites you need to run the plugin to the security exception list

Example commands:

[myusername@ol6vm]$ cd /usr/lib64/mozilla/plugins
[myusername@ol6vm plugins]$ sudo su
[sudo] password for myusername: 
[root@ol6vm plugins]# ln -fs $JAVA_HOME/jre/lib/amd64/libnpjp2.so libnpjp2.so
exit
[myusername@ol6vm plugins]$ $JAVA_HOME /jre/bin/jcontrol

© Scott S. Nelson

The documentation uses OEM to do this, something that Oracle XE does not have. Has a non-DBA, I find installing Oracle EE tedious. Thanks to waslleysouza.com.br, I was able to find the right script to execute with XE. For the DB-disabled like myself, here are the full steps to do this on a Linux host:

1. login to linux as a member of the dba group or sudo as same
2. # echo $ORACLE_SID
3. # echo $ORACLE_HOME

if either is blank:

# set ORACLE_SID=XE (or your service id)
# set ORACLE_HOME= (Eg: C:oraclexeapporacleproduct10.2.0server)

4. #locate sqlplus
5. run [RESULT FOUND PATH]sqlplus / as sysdba

i.e.,
# /u01/app/oracle/product/11.2.0/xe/bin/sqlplus / as sysdba

6. execute the following (replace values inside [brackets]):

CREATE USER [csuser] IDENTIFIED BY [password] DEFAULT TABLESPACE users TEMPORARY TABLESPACE temp;
GRANT CREATE session, CREATE table, CREATE view TO [csuser];
GRANT UNLIMITED TABLESPACE TO [csuser]; 
COMMIT;

© Scott S. Nelson