updated README.md

Author: HariSekhon

README.md

@@ -61,6 +61,9 @@ Cloud & Big Data Contractor, United Kingdom
   - [PostgreSQL](https://www.postgresql.org/) queries for DBA investigating + performance tuning
   - [postgres_info.sql](https://github.com/HariSekhon/SQL-scripts/blob/master/postgres_info.sql) - big summary overview, recommend you start here
   - tested on PostgreSQL 8.4, 9.x, 10.x, 11.x, 12.x, 13.x
+- `oracle_*.sql`:
+  - [Oracle](https://wwww.oracle.com) queries for DBA investigating
+  - tested on Oracle 9i, 10g, 11g, 19c
 
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