- // Check if github.com/friendica/master/VERSION is higher then
- // the local version of Friendica. Check is opt-in, source may be master or devel branch
+ // Avoid the database error 1615 "Prepared statement needs to be re-prepared", see https://github.com/friendica/friendica/issues/8550
+ $table_definition_cache = DBA::getVariable('table_definition_cache');
+ $table_open_cache = DBA::getVariable('table_open_cache');
+ if (!empty($table_definition_cache) && !empty($table_open_cache)) {
+ $suggested_definition_cache = min(400 + round($table_open_cache / 2, 1), 2000);
+ if ($suggested_definition_cache > $table_definition_cache) {
+ $warningtext[] = DI::l10n()->t('Your table_definition_cache is too low (%d). This can lead to the database error "Prepared statement needs to be re-prepared". Please set it at least to %d (or -1 for autosizing). See <a href="%s">here</a> for more information.<br />', $table_definition_cache, $suggested_definition_cache, 'https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_table_definition_cache');
+ }
+ }
+
+ // Check if github.com/friendica/stable/VERSION is higher then
+ // the local version of Friendica. Check is opt-in, source may be stable or develop branch