Synchronization of historical values

Requirements

In order to be able to use the Synchronization of historical Values in the Database or the historical synchronization in the database, the following requirements must be fulfilled:

  • A working WinCC OA RDB scheme must be available on both of the database computers.

  • The corresponding setup / schema upgrade for WinCC OA RDB must be carried out - see First-time RDB Installation and Upgrade of an RDB Project.

  • The schemes must be configured with the same user name and the same password on both computers.

  • An installation of the synchronization package must be executed (see below).

  • The Oracle® initialization parameter GLOBAL_NAMES must be set to FALSE, since for the database synchronization predefined database links are used.

Installation of the synchronization package

To install the synchronization package, the following steps have to be performed:

  1. Set the necessary entries in your RDB_config.sql (Entries for 2x2 Redundancy (Disaster Recovery System) and/or Historical Synchronization).

  2. Copy the RDB_config.sql to the WinCC OA installation directory under \data\RDBSetup\ora\sync.

  3. Open the Shell of the operating system and change the directory to \data\RDBSetup\ora\sync.

  4. Prompt the Sync_Setup.bat command under Windows and sync_setup.sh under Linux.

  5. Enter the password of the schema user and confirm with Enter to start the installation.