diff --git a/htdocs/admin/groups/uploadcsv.php b/htdocs/admin/groups/uploadcsv.php
index a27540b22302bce160176bb558fd552e1b9e44b2..13da1418133e04f57b50f1251a485e2f7884a034 100644
--- a/htdocs/admin/groups/uploadcsv.php
+++ b/htdocs/admin/groups/uploadcsv.php
@@ -18,7 +18,6 @@ require_once('pieforms/pieform.php');
 require_once(get_config('libroot') . 'group.php');
 require_once(get_config('libroot') . 'institution.php');
 safe_require('artefact', 'internal');
-raise_memory_limit("512M");
 
 // Turn on autodetecting of line endings, so mac newlines (\r) will work
 ini_set('auto_detect_line_endings', 1);
diff --git a/htdocs/admin/groups/uploadmemberscsv.php b/htdocs/admin/groups/uploadmemberscsv.php
index d18acf4e6f223808dca03413b0ba6e419df2cbea..0d21b31bcfe5925d8562ef57cc82c63ae81d6914 100644
--- a/htdocs/admin/groups/uploadmemberscsv.php
+++ b/htdocs/admin/groups/uploadmemberscsv.php
@@ -18,7 +18,6 @@ require_once('pieforms/pieform.php');
 require_once(get_config('libroot') . 'group.php');
 require_once(get_config('libroot') . 'institution.php');
 safe_require('artefact', 'internal');
-raise_memory_limit("512M");
 
 // Turn on autodetecting of line endings, so mac newlines (\r) will work
 ini_set('auto_detect_line_endings', 1);
diff --git a/htdocs/admin/upgrade.php b/htdocs/admin/upgrade.php
index ac685a8d7e91d3e37660d71a5ad45f9494a9982b..166ed32148812199cad1939b68c4427a42739835 100644
--- a/htdocs/admin/upgrade.php
+++ b/htdocs/admin/upgrade.php
@@ -122,8 +122,6 @@ $localsuccess  = json_encode(get_string('localdatasuccess', 'admin'));
 // Check if Mahara is being installed. An extra hook is required to insert core
 // data if so.
 if (!empty($upgrades['core']->install)) {
-    raise_time_limit(120);
-    raise_memory_limit('256M');
     $upgrades['firstcoredata'] = true;
     $upgrades['localpreinst'] = true;
     $upgrades['lastcoredata'] = true;
diff --git a/htdocs/admin/users/bulkimport.php b/htdocs/admin/users/bulkimport.php
index df2942a044702468fe8b919797e8a715393a5076..7c81bd4d35623d9439942e220e18e4d61e0f9c40 100644
--- a/htdocs/admin/users/bulkimport.php
+++ b/htdocs/admin/users/bulkimport.php
@@ -17,8 +17,6 @@ require_once('institution.php');
 require_once(get_config('docroot') . '/lib/htmloutput.php');
 safe_require('artefact', 'internal');
 safe_require('artefact', 'file');
-raise_memory_limit('1024M');
-set_time_limit(300); // 5 minutes
 
 define('TITLE', get_string('bulkleap2aimport', 'admin'));
 
diff --git a/htdocs/admin/users/uploadcsv.php b/htdocs/admin/users/uploadcsv.php
index 6fe523e9b7868f7837235d41341e47b01cc2683e..fff2c32cd86a061685c04e98e40a955632588b00 100644
--- a/htdocs/admin/users/uploadcsv.php
+++ b/htdocs/admin/users/uploadcsv.php
@@ -18,7 +18,6 @@ require_once('pieforms/pieform.php');
 require_once('institution.php');
 require_once('phpmailer/class.phpmailer.php');
 safe_require('artefact', 'internal');
-raise_memory_limit("512M");
 
 // Turn on autodetecting of line endings, so mac newlines (\r) will work
 ini_set('auto_detect_line_endings', 1);
diff --git a/htdocs/import/index.php b/htdocs/import/index.php
index df43f9c52db3c205d1eee2a50cedda85397b4a49..d1016f4d430c2efee3d8fc37524bece4f1778686 100644
--- a/htdocs/import/index.php
+++ b/htdocs/import/index.php
@@ -37,9 +37,6 @@ define('SECTION_PLUGINNAME', 'import');
 define('SECTION_PAGE', 'index');
 
 
-//TODO: Optimize!
-raise_memory_limit("512M");
-
 define('PRINTUPLOADFORM_ACT', 0);
 define('PRINTIMPORTITEMSFORM_ACT', 1);
 define('DOIMPORT_ACT', 2);
diff --git a/htdocs/lib/cron.php b/htdocs/lib/cron.php
index bb5d7944792488a3147b94aaeca77e68f9051067..13717b9a8ce731a1fad85e44157139caf1bf7d09 100644
--- a/htdocs/lib/cron.php
+++ b/htdocs/lib/cron.php
@@ -28,7 +28,6 @@ $fake = isset($argv[1]);
 $start = $fake ? strtotime($argv[1]) : $realstart;
 
 log_info('---------- cron running ' . date('r', $start) . ' ----------');
-raise_memory_limit('128M');
 
 if (!is_writable(get_config('dataroot'))) {
     log_warn("Unable to write to dataroot directory.");
diff --git a/htdocs/lib/csvfile.php b/htdocs/lib/csvfile.php
index 249b693b24a94fc9a24a662648c9ca6229d65162..7358f1156fac93173c2b98255567d14da8553d08 100644
--- a/htdocs/lib/csvfile.php
+++ b/htdocs/lib/csvfile.php
@@ -10,7 +10,6 @@
  */
 
 defined('INTERNAL') || die();
-raise_memory_limit("512M");
 
 define('MAX_LINE_LENGTH', 1024);