Sybase Adaptive Server Enterprise 12.5.x Quick Installation Manual page 17

CHAPTER 1 Installing Adaptive Server
Figure 1-5: Select a destination
6 Click Install to proceed. If you try to install this package a second time,
this button changes to Upgrade. If you click Upgrade, the software is
copied from the package into the release location at /Applications/Sybase,
but no server is initialized and started.
To stop the installation at this point, select Go Back to stop the installater.
From a terminal window, go to /Applications/Sybase/System/Install and
execute the uninstall shell script as described in "Uninstalling Sybase
software" on page 32. Then, re-run the installer.
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