<commit_before>.. change::
    :tags: bug, engine, regression
    :tickets: 6337

    Fixed critical regression caused by the change in :ticket`5497` where the
    connection pool "init" phase no longer occurred within mutexed isolation,
    allowing other threads to proceed with the dialect uninitialized, which
    could then impact the compilation of SQL statements.
<commit_msg>fix typo<commit_after>.. change::
    :tags: bug, engine, regression
    :tickets: 6337

    Fixed critical regression caused by the change in :ticket:`5497` where the
    connection pool "init" phase no longer occurred within mutexed isolation,
    allowing other threads to proceed with the dialect uninitialized, which
    could then impact the compilation of SQL statements.

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{'dir': 'git-commits-cleaned', 'id': '3301593', 'n_tokens_mistral': 203, 'n_tokens_neox': 186, 'n_words': 95}