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I think i found solution. The problem is that DBD::SQlite->disconnect() method execute sqlite3_close() function. This function return SQLITE_BUSY in case if there are any active statement. From API: "Applications should finalize all prepared statements and close all BLOBs associated with the sqlite3 object prior to attempting to close the sqlite3 object." Currently DBD::SQLite can finalize statements only via DESTROY method. In simplest case you can always use "undef $sth" or wait untill it goes out of scope which will finalize statement. But if you prepared statement via cache (prepare_cached) it will not work for you, because statement is till inside DBI cache. In this case we can call DESTROY on our cached statement only via DESTROY for database handler. And we can achieve it by "undef $dbh". "undef $dbh" - will close all cached statements and close database without any errors. Conclusion: avoid using $dbh->disconnect() for DBD::SQLite, instead use "undef $dbh".

In reply to Re^3: CGI::Session + DBD::SQLite = closing dbh with active statement handles by bash
in thread CGI::Session + DBD::SQLite = closing dbh with active statement handles by bash

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