diff --git a/adminer/drivers/oracle.inc.php b/adminer/drivers/oracle.inc.php
index 688812b2..89f2af75 100644
--- a/adminer/drivers/oracle.inc.php
+++ b/adminer/drivers/oracle.inc.php
@@ -200,7 +200,12 @@ ORDER BY 1"
 	}
 
 	function count_tables($databases) {
-		return array();
+		global $connection;
+		$return = array();
+		foreach ($databases as $db) {
+			$return[$db] = $connection->result("SELECT COUNT(*) FROM all_tables WHERE tablespace_name = " . q($db));
+		}
+		return $return;
 	}
 
 	function table_status($name = "") {
diff --git a/changes.txt b/changes.txt
index 09dab717..71e5d292 100644
--- a/changes.txt
+++ b/changes.txt
@@ -10,6 +10,7 @@ PostgreSQL: Avoid exporting empty sequence last value (bug #768)
 PostgreSQL: Do not show triggers from other schemas (PR #412)
 PostgreSQL: Fix multi-parameter functions in default values (bug #736)
 PostgreSQL PDO: Do not select NULL function for false values in edit
+Oracle: Count tables
 SimpleDB, Firebird, ClickHouse: Move to plugin
 
 Adminer 4.7.9 (released 2021-02-07):