PL/SQL Packages UTL_URL

Convert (escape) a string containing reserved characters into a valid Uniform Resource Locator (URL).

Functions:

ESCAPE Function 
          Returns a URL with illegal characters (and optionally reserved characters)
          escaped using the %2-digit-hex-code format 

UNESCAPE Function
          Unescapes the escape character sequences to their original forms in a URL.
          Convert the %XX escape character sequences to the original characters   

For full documentation of the packaged procedures above see the Oracle Manual:
"Oracle9i Supplied PL/SQL Packages and Types Reference"

or the book Oracle Built in Packages by Steven Feuerstein et al

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