Each child must have its own connection to the database as the DBD (and possibly the database system) stores data in process-local storage. The poor database system will be very confused when it get requests from different processes in the same connection - each having possibly a different view of the state of the connection. The results are highly unpredictable, time and usage dependent and will cause your hair to fall out and your teeth to rot.

Either let each child have its own connection, or have a common process (eg the 'mother') handle all the database traffic, and use something else to communicate with this 'db-server-process', some sort of RPC or shared memory or... YMMV.

Just don't (repeat DON'T) share database connections between processes.

Did I remember to say that you should not share connections between processes?

In reply to Re: Using fork with DBI to create simultaneous db connections. by htoug
in thread Using fork with DBI to create simultaneous db connections. by altern8

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.