See, I didn't RTFM! I did a google search, and here's my answer:

What happens if you don't explicitly disconnect? Since DBI handles are references to Perl objects, Perl's own garbage collector will move in and sweep up any object trash you leave lying around. It does that by calling the object's DESTROY method when there are no longer any references to the object held by your script, or when Perl is exiting.

The DESTROY method for a database handle will call disconnect() for you, if you've left the handle connected, in order to disconnect cleanly from the database. But it will complain about having to do so by issuing a warning:

Database handle destroyed without explicit disconnect.

A major caveat with the disconnect() method regards its behavior towards automatically committing transactions at disconnection. For example, if a program has updated data but has not called commit() or rollback() before calling disconnect(), the action taken by different database systems varies. Oracle will automatically commit the modifications, whereas Informix may not. To deal with this, the DESTROY method has to call rollback() before disconnect() if AutoCommit is not enabled. In Chapter 6, we'll discuss the effect of disconnect() and DESTROY on transactions in more detail.

In reply to Re: DBI Mysql Question by mutt
in thread DBI Mysql Question by mutt

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.