refs #730: add ADB PostgreSQL federation recording scripts

sql/adb/80_hmm_rds_pg_99_cleanup.sql

@@ -0,0 +1,63 @@
+-- ============================================================
+-- Optional pre-recording reset.
+-- Drops only the three local Views, Database Link, and
+-- Credential owned by this demo. Host ACL entries are retained.
+-- Redmine: #730
+-- ============================================================
+
+DECLARE
+  v_count PLS_INTEGER;
+BEGIN
+  FOR object_row IN (
+    SELECT object_name
+    FROM user_objects
+    WHERE object_type = 'VIEW'
+      AND object_name IN (
+        'HMM_RDS_CARRIERS_V',
+        'HMM_RDS_CARRIER_PERF_V',
+        'HMM_RDS_CARRIER_LATEST_V'
+      )
+    ORDER BY CASE object_name
+      WHEN 'HMM_RDS_CARRIER_LATEST_V' THEN 1
+      WHEN 'HMM_RDS_CARRIER_PERF_V' THEN 2
+      ELSE 3
+    END
+  ) LOOP
+    EXECUTE IMMEDIATE 'DROP VIEW ' || object_row.object_name;
+  END LOOP;
+
+  SELECT COUNT(*) INTO v_count
+  FROM user_db_links
+  WHERE db_link = 'HMM_RDS_PG_LINK';
+
+  IF v_count = 1 THEN
+    EXECUTE IMMEDIATE 'DROP DATABASE LINK HMM_RDS_PG_LINK';
+  END IF;
+
+  SELECT COUNT(*) INTO v_count
+  FROM all_credentials
+  WHERE credential_name = 'HMM_RDS_PG_CRED';
+
+  IF v_count = 1 THEN
+    DBMS_CLOUD.DROP_CREDENTIAL(
+      credential_name => 'HMM_RDS_PG_CRED'
+    );
+  END IF;
+END;
+/
+
+SELECT credential_name, username
+FROM all_credentials
+WHERE credential_name = 'HMM_RDS_PG_CRED';
+
+SELECT db_link, username, host
+FROM user_db_links
+WHERE db_link = 'HMM_RDS_PG_LINK';
+
+SELECT object_name, object_type
+FROM user_objects
+WHERE object_name IN (
+  'HMM_RDS_CARRIERS_V',
+  'HMM_RDS_CARRIER_PERF_V',
+  'HMM_RDS_CARRIER_LATEST_V'
+);