diff --git a/xCAT-client/bin/mysqlsetup b/xCAT-client/bin/mysqlsetup
index 2ccb49c6a..bd6b2504a 100755
--- a/xCAT-client/bin/mysqlsetup
+++ b/xCAT-client/bin/mysqlsetup
@@ -1601,7 +1601,7 @@ sub createcfgloc
     }
     my $mysqlentry =
       "mysql:dbname=xcatdb;host=$::MN|xcatadmin|$::adminpassword";
-    $cmd = "echo \"$mysqlentry\" >> $cfglocmysql";
+    $cmd = "echo \"$mysqlentry\" > $cfglocmysql";
     xCAT::Utils->runcmd($cmd, 0);
     if ($::RUNCMD_RC != 0)
     {
diff --git a/xCAT-client/bin/pgsqlsetup b/xCAT-client/bin/pgsqlsetup
index c18a664ff..c1d10039e 100755
--- a/xCAT-client/bin/pgsqlsetup
+++ b/xCAT-client/bin/pgsqlsetup
@@ -840,7 +840,7 @@ sub createcfgloc
         }
     }
     my $pgentry = "Pg:dbname=xcatdb;host=$::MN|xcatadm|$::adminpassword";
-    $cmd = "echo \"$pgentry\" >> $cfgloc";
+    $cmd = "echo \"$pgentry\" > $cfgloc";
     xCAT::Utils->runcmd($cmd, 0);
     if ($::RUNCMD_RC != 0)
     {