diff --git a/samples/README.md b/samples/README.md
index c6d0801..00b9784 100644
--- a/samples/README.md
+++ b/samples/README.md
@@ -5,7 +5,7 @@ This directory contains samples for cx_Oracle.
    [sql/SetupSamples.sql][1]. The
    syntax is:
 
-        sqlplus / as sysdba @sql/SetupSamples.sql
+        sqlplus sys/syspassword@hostname/servicename as sysdba @sql/SetupSamples.sql
 
    The script will create users `pythondemo` and `pythoneditions` and
    will create an edition called `python_e1`.
@@ -23,7 +23,7 @@ This directory contains samples for cx_Oracle.
    dropped by running the SQL script [sql/DropSamples.sql][3]. The
    syntax is
 
-        sqlplus / as sysdba @sql/DropSamples.sql
+        sqlplus sys/syspassword@hostname/servicename as sysdba @sql/DropSamples.sql
 
 [1]: https://github.com/oracle/python-cx_Oracle/blob/master/samples/sql/SetupSamples.sql
 [2]: https://github.com/oracle/python-cx_Oracle/blob/master/samples/sql/SampleEnv.sql
diff --git a/test/README.md b/test/README.md
index ec5d264..06e27d4 100644
--- a/test/README.md
+++ b/test/README.md
@@ -3,7 +3,7 @@ This directory contains the test suite for cx_Oracle.
 The schemas and SQL objects that are referenced in the test suite can be
 created by running the SQL script sql/SetupTest.sql. The syntax is:
 
-    sqlplus / as sysdba @sql/SetupTest.sql
+    sqlplus sys/syspassword@hostname/servicename as sysdba @sql/SetupTest.sql
 
 The script will create users cx_Oracle and cx_Oracle_proxy. If you wish to
 change the names of the users or the name of the edition you can edit the file
@@ -23,5 +23,5 @@ command in this directory:
 After running the test suite, the schemas and SQL objects can be dropped by
 running the SQL script sql/DropTest.sql. The syntax is
 
-    sqlplus / as sysdba @sql/DropTest.sql
+    sqlplus sys/syspassword@hostname/servicename as sysdba @sql/DropTest.sql