TNS Database Error Messages TNS-02505: Authentication: null context pointer provided November 5, 2020 mpbod TNS-02505: Authentication: null context pointer provided Cause: The function NAU_INI() was passed a null pointer as the pointer to the context that it is supposed to use. Action: Call NAU_INI() with a pointer to a context structure. 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)