diff --git a/ChangeLog b/ChangeLog
index 460da3830..4572a255d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -86,6 +86,8 @@ $Id$
 - [core] Update library PHPExcel to version 1.7.3c
 
 3.3.5.0 (not yet released)
+- patch #2932113 [information_schema] Slow export when having lots of
+  databases, thanks to Stéphane Pontier - shadow_walker
 
 3.3.4.0 (not yet released)
 - bug #2996161 [import] properly escape import value
diff --git a/libraries/mysql_charsets.lib.php b/libraries/mysql_charsets.lib.php
index 40ce37773..1782a3e6c 100644
--- a/libraries/mysql_charsets.lib.php
+++ b/libraries/mysql_charsets.lib.php
@@ -164,7 +164,17 @@ function PMA_getDbCollation($db) {
         return 'utf8_general_ci';
     }
 
-    return PMA_DBI_fetch_value('SELECT DEFAULT_COLLATION_NAME FROM information_schema.SCHEMATA WHERE SCHEMA_NAME = \'' . PMA_sqlAddSlashes($db) . '\' LIMIT 1;');
+    if (! $GLOBALS['cfg']['Server']['DisableIS']) {
+        // this is slow with thousands of databases
+        return PMA_DBI_fetch_value('SELECT DEFAULT_COLLATION_NAME FROM information_schema.SCHEMATA WHERE SCHEMA_NAME = \'' . PMA_sqlAddSlashes($db) . '\' LIMIT 1;');
+    } else {
+        PMA_DBI_select_db($db);
+        $return = PMA_DBI_fetch_value('SHOW VARIABLES LIKE \'collation_database\'', 0, 1);
+        if ($db !== $GLOBALS['db']) {
+            PMA_DBI_select_db($GLOBALS['db']);
+        }
+        return $return;
+    }
 }
 
 /**