It's more than a dozen years ago since I last used Sybase, so my remark may be way off, but why are you expecting anything from your showplan_handler? You aren't doing any query, so there's no query plan to be made.

What happens if you add a 

    $dbh->dbcmd("SELECT * FROM SOME_TABLE");
    $dbh->dbsqlexec;

[download]
to your program?

In reply to Re: DBI Issue with Sybase 15.5 by JavaFan
in thread DBI Issue with Sybase 15.5 by hiyall

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