Sybase 15.0.2 - Manual (Page 120)

Solutions to common installation problems
106 Adaptive Server Enterprise
4 If the installation fails after the installation program starts the Adaptive
Server that you are attempting to install, shut down that server.
5 Use Server Config to restart the configuration.
If Adaptive Server fails the pre-upgrade eligibility test
If Adaptive Server fails the pre-upgrade test, Server Config displays:
Server SERVER_NAME failed preupgrade eligibility test.
See log for more information.
1 Click Exit.
2 The message: “Upgrade Check Failed” appears. Click OK.
3 From the Configure Sybase Servers window, select Exit.
4 Examine the log file created in the
%SYBASE%\%SYBASE_ASE%\init\logs directory to find out why
Adaptive Server failed the pre-upgrade eligibility test.
After you resolve any problems, shut down Adaptive Server and use
Server Config to complete the upgrade session.
Recovering from a failed upgrade
Note Once you start ASE on the new version you cannot start ASE on the
previous version. Attempts to do so will likely result in having to restore from
backups.
If the upgrade process fails, the installation program displays error messages.
Review the error messages and the Adaptive Server error log to determine the
cause of the upgrade failure. For default error log locations, see Table 7-2 on
page 103.
Restoring from backup
You may need to restore your databases due to a failed upgrade.