diff --git a/db_operations.php b/db_operations.php
index b80fe3ce44..60f00d0b6b 100644
--- a/db_operations.php
+++ b/db_operations.php
@@ -32,7 +32,7 @@ $scripts->addFile('db_operations.js');
 /**
  * Rename/move or copy database
  */
-if (strlen($db)
+if (strlen($GLOBALS['db'])
     && (! empty($_REQUEST['db_rename']) || ! empty($_REQUEST['db_copy']))
 ) {
     if (! empty($_REQUEST['db_rename'])) {
@@ -59,12 +59,12 @@ if (strlen($db)
         // to avoid selecting alternatively the current and new db
         // we would need to modify the CREATE definitions to qualify
         // the db name
-        PMA_runProcedureAndFunctionDefinitions($db);
+        PMA_runProcedureAndFunctionDefinitions($GLOBALS['db']);
 
         // go back to current db, just in case
-        $GLOBALS['dbi']->selectDb($db);
+        $GLOBALS['dbi']->selectDb($GLOBALS['db']);
 
-        $tables_full = $GLOBALS['dbi']->getTablesFull($db);
+        $tables_full = $GLOBALS['dbi']->getTablesFull($GLOBALS['db']);
 
         include_once "libraries/plugin_interface.lib.php";
         // remove all foreign key constraints, otherwise we can get errors
@@ -79,20 +79,20 @@ if (strlen($db)
         );
         $GLOBALS['sql_constraints_query_full_db']
             = PMA_getSqlConstraintsQueryForFullDb(
-                $tables_full, $export_sql_plugin, $move, $db
+                $tables_full, $export_sql_plugin, $move, $GLOBALS['db']
             );
 
         $views = PMA_getViewsAndCreateSqlViewStandIn(
-            $tables_full, $export_sql_plugin, $db
+            $tables_full, $export_sql_plugin, $GLOBALS['db']
         );
 
         list($sql_query, $_error) = PMA_getSqlQueryForCopyTable(
-            $tables_full, $sql_query, $move, $db
+            $tables_full, $sql_query, $move, $GLOBALS['db']
         );
 
         // handle the views
         if (! $_error) {
-            $_error = PMA_handleTheViews($views, $move, $db);
+            $_error = PMA_handleTheViews($views, $move, $GLOBALS['db']);
         }
         unset($views);
 
@@ -105,50 +105,51 @@ if (strlen($db)
             // here DELIMITER is not used because it's not part of the
             // language; each statement is sent one by one
 
-            PMA_runEventDefinitionsForDb($db);
+            PMA_runEventDefinitionsForDb($GLOBALS['db']);
         }
 
         // go back to current db, just in case
-        $GLOBALS['dbi']->selectDb($db);
+        $GLOBALS['dbi']->selectDb($GLOBALS['db']);
 
         // Duplicate the bookmarks for this db (done once for each db)
-        PMA_duplicateBookmarks($_error, $db);
+        PMA_duplicateBookmarks($_error, $GLOBALS['db']);
 
         if (! $_error && $move) {
             /**
              * cleanup pmadb stuff for this db
              */
             include_once 'libraries/relation_cleanup.lib.php';
-            PMA_relationsCleanupDatabase($db);
+            PMA_relationsCleanupDatabase($GLOBALS['db']);
 
             // if someday the RENAME DATABASE reappears, do not DROP
-            $local_query = 'DROP DATABASE ' . PMA_Util::backquote($db) . ';';
+            $local_query = 'DROP DATABASE ' . PMA_Util::backquote($GLOBALS['db'])
+                . ';';
             $sql_query .= "\n" . $local_query;
             $GLOBALS['dbi']->query($local_query);
 
             $message = PMA_Message::success(
                 __('Database %1$s has been renamed to %2$s.')
             );
-            $message->addParam($db);
+            $message->addParam($GLOBALS['db']);
             $message->addParam($_REQUEST['newname']);
         } elseif (! $_error) {
             $message = PMA_Message::success(
                 __('Database %1$s has been copied to %2$s.')
             );
-            $message->addParam($db);
+            $message->addParam($GLOBALS['db']);
             $message->addParam($_REQUEST['newname']);
         }
         $reload     = true;
 
         /* Change database to be used */
         if (! $_error && $move) {
-            $db = $_REQUEST['newname'];
+            $GLOBALS['db'] = $_REQUEST['newname'];
         } elseif (! $_error) {
             if (isset($_REQUEST['switch_to_new'])
                 && $_REQUEST['switch_to_new'] == 'true'
             ) {
                 $GLOBALS['PMA_Config']->setCookie('pma_switch_to_new', 'true');
-                $db = $_REQUEST['newname'];
+                $GLOBALS['db'] = $_REQUEST['newname'];
             } else {
                 $GLOBALS['PMA_Config']->setCookie('pma_switch_to_new', '');
             }
@@ -172,7 +173,7 @@ if (strlen($db)
             'sql_query',
             PMA_Util::getMessage(null, $sql_query)
         );
-        $response->addJSON('db', $db);
+        $response->addJSON('db', $GLOBALS['db']);
         exit;
     }
 }
@@ -188,7 +189,7 @@ $cfgRelation = PMA_getRelationsParam();
  * (must be done before displaying the menu tabs)
  */
 if (isset($_REQUEST['comment'])) {
-    PMA_setDbComment($db, $_REQUEST['comment']);
+    PMA_setDbComment($GLOBALS['db'], $_REQUEST['comment']);
 }
 
 require 'libraries/db_common.inc.php';
@@ -204,8 +205,8 @@ if (isset($message)) {
     unset($message);
 }
 
-$_REQUEST['db_collation'] = PMA_getDbCollation($db);
-$is_information_schema = $GLOBALS['dbi']->isSystemSchema($db);
+$_REQUEST['db_collation'] = PMA_getDbCollation($GLOBALS['db']);
+$is_information_schema = $GLOBALS['dbi']->isSystemSchema($GLOBALS['db']);
 
 $response->addHTML('<div id="boxContainer" data-box-width="300">');
 
@@ -214,7 +215,7 @@ if (!$is_information_schema) {
         /**
          * database comment
          */
-        $response->addHTML(PMA_getHtmlForDatabaseComment($db));
+        $response->addHTML(PMA_getHtmlForDatabaseComment($GLOBALS['db']));
     }
 
     $response->addHTML('<div class="operations_half_width">');
@@ -228,8 +229,8 @@ if (!$is_information_schema) {
     /**
      * rename database
      */
-    if ($db != 'mysql') {
-        $response->addHTML(PMA_getHtmlForRenameDatabase($db));
+    if ($GLOBALS['db'] != 'mysql') {
+        $response->addHTML(PMA_getHtmlForRenameDatabase($GLOBALS['db']));
     }
 
     // Drop link if allowed
@@ -238,19 +239,19 @@ if (!$is_information_schema) {
     // Don't allow to easily drop mysql database, RFE #1327514.
     if (($is_superuser || $GLOBALS['cfg']['AllowUserDropDatabase'])
         && ! $db_is_system_schema
-        && (PMA_DRIZZLE || $db != 'mysql')
+        && (PMA_DRIZZLE || $GLOBALS['db'] != 'mysql')
     ) {
-        $response->addHTML(PMA_getHtmlForDropDatabaseLink($db));
+        $response->addHTML(PMA_getHtmlForDropDatabaseLink($GLOBALS['db']));
     }
     /**
      * Copy database
      */
-    $response->addHTML(PMA_getHtmlForCopyDatabase($db));
+    $response->addHTML(PMA_getHtmlForCopyDatabase($GLOBALS['db']));
 
     /**
      * Change database charset
      */
-    $response->addHTML(PMA_getHtmlForChangeDatabaseCharset($db, $table));
+    $response->addHTML(PMA_getHtmlForChangeDatabaseCharset($GLOBALS['db'], $table));
 
     if ($num_tables > 0
         && ! $cfgRelation['allworks']
@@ -284,7 +285,7 @@ if ($cfgRelation['pdfwork'] && $num_tables > 0) {
          SELECT *
            FROM ' . PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
             . '.' . PMA_Util::backquote($cfgRelation['pdf_pages']) . '
-          WHERE db_name = \'' . PMA_Util::sqlAddSlashes($db) . '\'';
+          WHERE db_name = \'' . PMA_Util::sqlAddSlashes($GLOBALS['db']) . '\'';
     $test_rs = PMA_queryAsControlUser(
         $test_query,
         false,