PLS Database Error Messages PLS-00594: the SELF parameter can be declared only as IN or as IN OUT April 20, 2021 mpbod PLS-00594: the SELF parameter can be declared only as IN or as IN OUT Cause: The SELF parameter was declared as an OUT parameter. Action: Declare the SELF parameter as either an IN or an IN OUT parameter. Back to previous menu https://support.oracle.com/ http://www.oracle.com/ Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)