Remove the FSPM Software (Optional)

When you remove the Oracle FS Path Manager (FSPM) software, support for multiple paths to Oracle FS System LUNs is removed.

Important! Before you remove the FSPM software, you must disconnect the host from the Oracle FS System if you do not want to access the Oracle FS System LUNs.

Microsoft requires that, before removing MPIO support for a device, there must be a maximum of one path connected to the device and, if a path is left connected, that I/O to the device should be stopped or reduced as low as possible.

If you want to continue LUN access, reconfigure the SAN so that there is only a single Fibre Channel path or iSCSI connection from the host to each Oracle FS System Controller pair or Pillar Axiom Slammer.

Verify that all applications and management applications are closed.
Important! It may take several minutes for Windows to recognize that paths or LUNs have been disconnected from the host. It is important that you wait until Windows recognizes these changes have been made and completes updating its configuration before you remove FSPM.

Use Windows Device Manager to check the paths and LUNs that Windows currently has in its configuration. Selecting Scan for hardware changes in Device Manager can help Windows recognize the changes more quickly.

Wait until Device Manager shows that all Oracle FS System or Pillar Axiom LUNs have been removed (or that all Oracle FS System or Pillar Axiom LUNs have a maximum of one path remaining if you have chosen to leave the LUNs connected) before closing Device Manager and removing FSPM.
Use one of the following options listed below to remove FSPM.
Please note, if you want to install a newer version, you do not need to remove the previous version. If you want to remove the product, follow these steps:
- From the GUI, in Control Panel go to Programs and Features and select the program the eversion you want to remove.
- From the command line, enter the following command at a command line prompt:
```
wmic product where name=”Oracle FS Path Manager” call uninstall
```
  This command may prompt you for a response.
  Note: If Windows requires a reboot after uninstalling using this command, Windows reboots immediately without warning or asking for confirmation.
Tip: Sometimes the uninstall process may take longer than expected on the host and the process can appear to be hang. Allow the process to run for at least an hour before attempting to restart it.
(Optional). You can choose to remove the Multipath I/O feature after removing FSPM, if nothing else is using it.
If you are prompted to do so, restart the system.

Note: If access to a LUN is lost, you can use the Disk Administrator to reactivate the drive on one of the paths that is showing. If the path that the Disk Administrator can see is missing, restore the path and then choose Reactivate Disk.

CAUTION

There are situations in which you might want to remove or update the pillardsm.sys driver or a component of Microsoft's MPIO multi-path disk framework using the device and driver property pages in the Windows Device Manager. Use only the Programs and Features or the wmic command described above to change your installation. Other tools can leave the system in an inconsistent state and possibly prevent subsequent system startups.

The options listed above to remove FSPM ensure that all components are left in a consistent state. If the above options fail to remove FSPM, contact Oracle Customer Support.