From perldoc DBI
 $dbh = DBI->connect($dsn, $user, $password,
                             { RaiseError => 1 });

 "RaiseError" (boolean, inherited)
           This attribute can be used to force errors to raise excepti
+ons
           rather than simply return error codes in the normal way. It
+ is
           "off" by default.  When set "on", any method which results 
+in an
           error will cause the DBI to effectively do a "die("$class $
+method
           failed: $DBI::errstr")", where $class is the driver class a
+nd
           $method is the name of the method that failed. E.g.,

             DBD::Oracle::db prepare failed: ... error text here ...

           If you turn "RaiseError" on then you'd normally turn "Print
+Error"
           off.  If "PrintError" is also on, then the "PrintError" is 
+done
           first (naturally).

           Typically "RaiseError" is used in conjunction with "eval { 
+... }"
           to catch the exception that's been thrown and followed by a
+n "if
           ($@) { ... }" block to handle the caught exception. In that
+ eval
           block the $DBI::lasth variable can be useful for diagnosis 
+and
           reporting.  For example, $DBI::lasth->{Type} and
           $DBI::lasth->{Statement}.

[download]
Hope this helps

In reply to Re: DBI connections. by ColtsFoot
in thread DBI connections. by yoda54

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.