diff --git a/admin/environment.xml b/admin/environment.xml
index 37916496422..834b0177082 100644
--- a/admin/environment.xml
+++ b/admin/environment.xml
@@ -4714,7 +4714,6 @@
       <VENDOR name="mysql" version="8.4" />
       <VENDOR name="postgres" version="14" />
       <VENDOR name="mssql" version="14.0" />
-      <VENDOR name="oracle" version="19" />
     </DATABASE>
     <PHP version="8.2.0" level="required">
     </PHP>
@@ -4892,8 +4891,6 @@
       </CUSTOM_CHECK>
       <CUSTOM_CHECK file="lib/upgradelib.php" function="check_db_prefix_length" level="required">
       </CUSTOM_CHECK>
-      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_oracle_usage" level="optional">
-      </CUSTOM_CHECK>
       <CUSTOM_CHECK file="lib/upgradelib.php" function="check_async_backup" level="recommended">
       </CUSTOM_CHECK>
     </CUSTOM_CHECKS>
diff --git a/lib/environmentlib.php b/lib/environmentlib.php
index 2dcd9fe4aa0..4abbdd82fe4 100644
--- a/lib/environmentlib.php
+++ b/lib/environmentlib.php
@@ -1053,15 +1053,16 @@ function environment_check_database($version, $env_select) {
 
     $dbinfo = $DB->get_server_info();
     $current_version = normalize_version($dbinfo['version']);
-    $needed_version = $vendors[$current_vendor];
 
-/// Check we have a needed version
-    if (!$needed_version) {
+    // Check we have a needed version.
+    if (empty($vendors[$current_vendor])) {
         $result->setStatus(false);
         $result->setErrorCode(NO_DATABASE_VENDOR_VERSION_FOUND);
         return $result;
     }
 
+    $needed_version = $vendors[$current_vendor];
+
     // Check if the DB Vendor has been properly configured.
     // Hack: this is required when playing with MySQL and MariaDB since they share the same PHP module and base DB classes,
     // whilst they are slowly evolving using separate directions though MariaDB is still an "almost" drop-in replacement.