2026-03-12 20:23:15

vdh/list_incoming_db_links.sql

@@ -0,0 +1,52 @@
+-- uses the aud$ data to generate a list of all incoming database links
+-- the accurateness of the list depends on how long the audit data is stored and inactive db links will not show up in this list
+
+set linesize 250
+
+column source_globalname format a30
+column dblink_name format a50
+column source_host format a40
+column dest_schema format a30
+column first_connection format a20
+column last_connection format a20
+column cnt_connections format 9G999G999G999
+
+break on source_globalname on dblink_name on userhost
+
+with
+  incoming as
+    ( select 
+        regexp_replace(comment$text, '.*SOURCE_GLOBAL_NAME=(([^,]+)),.*', '\1') source_globalname,
+        regexp_replace(comment$text, '.*DBLINK_NAME=(([^,]+)),.*', '\1') dblink_name,
+        userhost source_host,
+        userid dest_schema,
+        ntimestamp#
+      from 
+        sys.aud$ 
+      where 
+        comment$text like 'DBLINK%' 
+    )
+select
+  source_globalname,
+  dblink_name,
+  source_host,
+  dest_schema,
+  to_char(min(ntimestamp#),'DD/MM/YYYY HH24:MI') first_connection,
+  to_char(max(ntimestamp#), 'DD/MM/YYYY HH24:MI') last_connection,
+  count(*) cnt_connections
+from
+  incoming  
+group by
+  source_globalname,
+  dblink_name,
+  source_host,
+  dest_schema
+order by
+  source_globalname,
+  dblink_name,
+  source_host,
+  dest_schema
+;
+
+clear breaks
+