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# Uninstalling Avantra

The Avantra components should be removed in the following order:

1. Remove all Avantra Agents from servers.
2. Remove all SAP Transports and users from SAP Systems.
3. Remove all database, cloud and integration users from those systems.
4. Remove the Avantra Server components.

## Uninstalling Avantra Agent​

### On Microsoft Windows operating systems​

1. Open Control Panel\All Control Panel Items\Programs and Features.
2. Select the entry Avantra Agent 25 and click Remove.
3. Follow the instructions on the screen.
4. Close the Programs and Features control panel.
5. Delete the `C:\Program Files\syslink` directory.

### On Unix-like operating systems​

Proceed as follows (you may need to perform the steps as user root):

1. Stop the Avantra Agent by executing the command `/syslink/agent/rc.agent stop`.
2. Remove the whole directory `/syslink`.
3. Remove any link to `rc.agent` that may exist.
4. If you prefer, remove the operating system user and group `xandria`, or whatever user you used to run Avantra Agent. Consult your operating system documentation on how to remove a user or group.
5. Remove the user or group `xandria` as a member from the groups `sapsys`, dba, and `db[sid]adm`, if required.

### Removing the Avantra SAP users​

If you have created a dedicated SAP User for Avantra, you may remove this user (e.g. `XANDRIA_RFC` or `XANDRIA_J2EE` or `AVANTRA_RFC` or `AVANTRA_J2EE`) using transaction `SU01` (ABAP) and the Visual Administrator or the UME console.

Consult your SAP system documentation on how to remove an SAP User.

### Removing the transport requests​

If it's required to remove objects imported by the transport request.

- For SAP systems below 7.30, see the Avantra Knowledge Base article How to remove Avantra namespace objects from SAP systems below 7.30.
- For AP systems 7.30 and above, see the Avantra Knowledge Base article How to delete Avantra objects (incl. namespaces) from ABAP SAP systems 7.30 SP5 and above.

## Uninstalling Avantra Server components​

### On Microsoft Windows operating systems​

In order to remove the Avantra Server components, proceed as follows:

1. Open Control Panel\All Control Panel Items\Programs and Features.
2. Follow the instructions on the screen.
3. Select the entry Avantra Server and click Change.
4. Follow the instructions on the screen.
5. Close the Programs and Features control panel.
6. Delete the `C:\Program Files\syslink` directory.

If you have installed the Microsoft SQL Server 2016 Express Edition, you probably want to remove this software as well:

1. Open Control Panel\All Control Panel Items\Programs and Features.
2. Select the entry Microsoft SQL Server 2016 and click Remove.
3. Follow the instructions on the screen.
4. Refresh the Programs and Features control panel.
5. Select the entry Microsoft SQL Server Native Client and click Remove.
6. Close the Programs and Features control panel.
7. If preferred, and if no other Microsoft SQL Server components are installed, you may delete the `C:\Program Files\Microsoft SQL Server` directory.

You probably want to remove the Java Runtime Environment installed during the Avantra Server installation as well:

1. Open Control Panel\All Control Panel Items\Programs and Features.
2. Select the entry `Java 8 Update <x>` and click Remove.
3. Follow the instructions on the screen.
4. Close the Programs and Features control panel.

### On Unix-like operating systems​

Proceed as follows:

1. Stop all daemons:

    root$ /syslink/xangui/rc.xangui stop
    root$ /syslink/master/rc.master stop
    root$ /syslink/xandriadb/rc.xandriadb stop

2. Remove all entries of `xandria` from the `cron` facility.
3. Remove directory `/syslink`:

    root$ rm -rf /syslink

4. Refer to your system documentation ow to delete Java.
5. Remove user `xandria`, remove group `xandria`, remove directory `/home/xandria`.