Search for drupal_set_time_limit in Drupal directory and modify the line as below. Ensure that it is restored later once the required operation is over:
For example: Modify the following line in locale.inc file in includes/locale.inc.
<?php
drupal_set_time_limit(240);
?>and set to 1800.
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Source
https://www.drupal.org/node/2085515#comment-7845525
Technologies: