Oracle WWV_FLOW_VAL
Version 11.2.0.3

General Information
Purpose This package is undocumented and its purpose elusive. The point of this library entry is just to document what I have found.
AUTHID CURRENT_USER
Constants
Name Data Type Value
VALID_USER PLS_INTEGER 0
INVALID_USER PLS_INTEGER 1
NULL_INPUT PLS_INTEGER -1
Dependencies
DBA_USERS WWV_FLOW_SECURITY WWV_FLOW_VAL_LIB
WWV_FLOW_CUSTOM_AUTH_STD WWV_FLOW_VAL  
Exceptions
Error Code Reason
ORA-32058 Invalid Caller
ORA-28000 Account Locked
ORA-28001 Password Expired
Security Model Owned by SYS with EXECUTE granted to APEX_030200
Source {$ORACLE_HOME}/apex/core/wwv_flow_val.sql
 
VERIFY_USER
Appears non-functional based on the test shown. But that may just be due to not understanding how utilize it. wwv_flow_val(username IN VARCHAR2, password IN VARCHAR2) RETURN BINARY_INTEGER;
SELECT wwv_flow_val.verify_user('UWCLASS', 'UWCLASS')
FROM dual;

SELECT wwv_flow_val.verify_user('UWCLASS', 'Id10T')
FROM dual;

SELECT wwv_flow_val.verify_user('Id10T', '43')
FROM dual;

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