Password verification function

I am trying to implement some simple password complexity rules by adding a password verification function to the default profile. I am using Oracle's sample code (utlpwdmg.sql) as a starting point. Looking at the code, I can see that it raises application errors (-20001, -20002 ...) for things like a password which is the same as the user name, password too short, etc. When I try to change a password, however, all I get is the generic ORA-28003 error, even when I try a password which, I believe, should pass. What am I missing here?

Environment: Oracle 8.1.7.4 with the cpuJan2006 patches, AIX 5.3.

Thanks,
Peter Schauss

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