To safely remove Zend Core from your system after Zend Server for IBM i has been installed, please verify that you are at version 2.6.1 of Zend Core for IBM i5/OS. If you are at an earlier version, please upgrade to 2.6.1 before uninstalling Zend Core for IBM i5/OS. Uninstalling an earlier release of Zend Core for IBM i5/OS will cause ZENDADMIN and other user profiles to be deleted, along with any objects owned by these user profiles. This includes the objects in the Zend Server for IBM i library ZENDSVR.
To determine the version of Zend Core for IBM i5/OS installed on your system, check the "Display Installed Licensed Programs" display. From the command line:
Use option "10. Display installed licensed programs".
Scroll down (usually to the last page, or next to last page) to find product 1ZCORE5. The description will tell the version installed. The description should be "Zend Core for IBM i5/OS (2.6.1)".
If you do not have version 2.6.1 installed, please download and install it. The installer is available here:http://www.zend.com/en/products/platform/downloads-old
After installing version 2.6.1, it is safe to remove Zend Core. If you also have Zend Platform for IBM i5/OS, you should remove it before removing Zend Core.
This article can help you remove Zend Platform for IBM i5/OS: http://kb.zend.com/index.php?View=entry&EntryID=245
This article can help you remove Zend Core for IBM i5/OS: http://kb.zend.com/index.php?View=entry&EntryID=242