You might have faced below error.

SQL> select dbms_java.get_jdk_version() from dual;
select dbms_java.get_jdk_version() from dual
*
ERROR at line 1:
ORA-29548: Java system class reported: release of classes.bin in the database
does not match that of the oracle executable.

Solution:

This error usually comes, if you haven’t completed the post patching activities for JVM patch.
The workaround to solve this issue is to run @?/javavm/install/update_javavm_db.sql

Now check again: