If there's an eval without a local $@; in the code that handles $dbh->{AutoCommit} = $previous_value;, then $@ will get clobbered. Keep in mind that $dbh->{AutoCommit} is a tied variable.

In reply to Re^3: How to safely test if a database handle is capable of transactions? by ikegami
in thread How to safely test if a database handle is capable of transactions? by larryl

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