diff --git a/adminer/drivers/oracle.inc.php b/adminer/drivers/oracle.inc.php
index 2f5b8b33..57ad049c 100644
--- a/adminer/drivers/oracle.inc.php
+++ b/adminer/drivers/oracle.inc.php
@@ -273,7 +273,7 @@ ORDER BY 1"
 			$type = $row["DATA_TYPE"];
 			$length = "$row[DATA_PRECISION],$row[DATA_SCALE]";
 			if ($length == ",") {
-				$length = $row["DATA_LENGTH"];
+				$length = $row["CHAR_COL_DECL_LENGTH"];
 			} //! int
 			$return[$row["COLUMN_NAME"]] = array(
 				"field" => $row["COLUMN_NAME"],
diff --git a/changes.txt b/changes.txt
index e2416faf..1bfdd4da 100644
--- a/changes.txt
+++ b/changes.txt
@@ -12,6 +12,7 @@ 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
 Oracle: Import from CSV
+Oracle: Fix column size with string type
 SimpleDB, Firebird, ClickHouse: Move to plugin
 
 Adminer 4.7.9 (released 2021-02-07):