Fresh install of eHealth 6.3.2.11 on Windows server fails at Database creation stage with the error: nhCreateDb FAILED: log file is FAR TOO SMALL (624 vs 15000+ lines)

Document ID : KB000039021
Last Modified Date : 14/02/2018
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Problem: 

Attempting to install ehealth 6.3.2.11 on Windows server fails at the Database creation stage with the following error: 

Wed 18:12:38 Unable to add Oracle Listener for D:/oracle/Oracle.11.2 
+------------------------------------------------------------------------- 
nhCreateDb FAILED: log file is FAR TOO SMALL (624 vs 15000+ lines): 

Even after performing the steps highlighted in TEC1264456 the reinstallation still fails with the same error.

Environment:  

eHealth 6.3.2 and above.

Cause: 

A previous installation of eHealth (either standalone, distributed or failover) has not been entirely removed. The problem is that there are some Windows registry keys left over from Oracle that need to be deleted. However, not all of these are documented in the Uninstall section (Appendix D) of the eHealth Install Guide.

Workaround:

Manually search for all eHealth and Oracle related keys under:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ 
HKEY_LOCAL_MACHINE\SOFTWARE 
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services 

Take a backup and then delete these eHealth and Oracle keys.