readme links

Author: nigelbayliss

optimizer/db_load/README.md

@@ -6,6 +6,6 @@ The Java was tested on JDK 7 and Oracle Database 12.1.0.2, but it will work with
 
 The Python example requires <a href="http://cx-oracle.sourceforge.net/">cx_Oracle</a>, which in turn depends an Oracle client installation (for example, the <a href="http://www.oracle.com/technetwork/database/features/instant-client/index.html">basic instant client plus the SDK).</a>
 
-The <a href="https://github.com/oracle/dw-vldb/blob/master/db_load/example_output.txt">example output file</a> is included so that you can see how the Java code behaves. Note that it shows what happens if you use a transatlantic SQLNet connection: any optimization that reduces the number of network rountrips results in a very significant performance improvment - above all others! If you are using a local database, you will want to increase *rowCount* significantly.
+The example_output.txt file is included so that you can see how the Java code behaves. Note that it shows what happens if you use a transatlantic SQLNet connection: any optimization that reduces the number of network rountrips results in a very significant performance improvment - above all others! If you are using a local database, you will want to increase *rowCount* significantly.
 
-A SQL script is included to create the test table. Your Oracle user will need to have database resource/create table permissions to create it. Also, make sure that you can "select \* from" v$mystat and v$statname using your Oracle user account (a DBA account holder can grant your user access to these data dictionary views if necessary).
+A SQL script is included to create the test table. Your Oracle user will need to have database resource/create table permissions to create it. Also, make sure that you can "select \* from" v$mystat and v$statname using your Oracle user account (a DBA account holder can grant your user access to these data dictionary views if necessary).

optimizer/partition_exchange_load/README.md

@@ -6,15 +6,15 @@ https://blogs.oracle.com/optimizer/entry/efficient_statistics_maintenance_for_pa
 
 They are primarily designed with Oracle Database 12c in mind but they will largely work in Oracle Database 11g - except that the steps to pre-create synopses will fail and the post-exchange stats gathering for the new partition cannot be avoided. 
 
-### [example.sql](https://github.com/oracle/dw-vldb/tree/master/partition_exchange_load/example.sql)
+### [example.sql](https://github.com/oracle/oracle-db-examples/blob/master/optimizer/partition_exchange_load/example.sql)
 
 This script shows how partition exchange load interacts with incremental statistics for a subpartitioned main table.
 
-### [list_s.sql](https://github.com/oracle/dw-vldb/tree/master/partition_exchange_load/list_s.sql)
+### [list_s.sql](https://github.com/oracle/oracle-db-examples/blob/master/optimizer/partition_exchange_load/list_s.sql)
 
 This script lists extended statistics and histograms for a paritioned table.
 
-### [check_hist.sql](https://github.com/oracle/dw-vldb/tree/master/partition_exchange_load/check_hist.sql)
+### [check_hist.sql](https://github.com/oracle/oracle-db-examples/blob/master/optimizer/partition_exchange_load/check_hist.sql)
 
 This script compares histograms at the table level with histograms for each (sub)partition. This is not a problem and not uncommon if histograms are created automatically (using 'FOR ALL COLUMNS SIZE AUTO'). Nevertheless, it's useful to be aware of this if you have been managing histograms and partition statistics in an ad-hoc manner. It might not have been your intention.
 

optimizer/upgrading_to_12c/README.md

@@ -15,15 +15,15 @@ You may need to:
 
 In the directories below are some *experimental* scripts to help you manage statistics. The aim here is for you to take and adapt them to you own needs. They are broken down into three categories:
 
-### [show_stats](https://github.com/oracle/dw-vldb/tree/master/upgrading_to_12c/show_stats)
+### [show_stats](https://github.com/oracle/oracle-db-examples/blob/master/optimizer/upgrading_to_12c/show_stats)
 
 These scripts demonstrate how to view extended statistics, histograms, SQL plan directives and column usage information. They also demonstrate how you can see which histograms and extended statistics have been created automatically.
 
-### [duplicate](https://github.com/oracle/dw-vldb/tree/master/upgrading_to_12c/duplicate)
+### [duplicate](https://github.com/oracle/oracle-db-examples/blob/master/optimizer/upgrading_to_12c/duplicate)
 
 These scripts query a database schema to spool scripts that can be used to create matching histograms and extended statistics on another database.
 
-### [dpump_copy](https://github.com/oracle/dw-vldb/tree/master/upgrading_to_12c/dpump_copy)
+### [dpump_copy](https://github.com/oracle/oracle-db-examples/blob/master/optimizer/upgrading_to_12c/dpump_copy)
 
 These scripts demonstrate how easy it is to use Data Pump to copy all relevant statistics from one database schema to another.