Sybase is too rough

We have long known that various Sybase products fight each other during installation. the same DLL file may exist multiple times in each directory. the environment variable settings are messy, especially when the path is broken. the system files required for running Java are repeated everywhere. sybase is too rough

[Original] several installation details of ASE

When the ASE is uninstalled, the "environment variables" set by the ASE are not cleared. If you install the ASE multiple times, the environment variables become longer and longer,
Even the environment variable space is exhausted.
The environment variable path after multiple installation of ASE is listed below (for the sake of clarity, it has been processed). We can see that the environment variable path is suffering.
Other environment variables are similar. You should know the solution.
Path =
C:/program files/Sybase/jaruar CTS 3.5/bin;
C:/program files/Sybase/jaruar CTS 3.5/DLL;
C:/program files/Sybase/jaruar CTS 3.5/client/DLL;
C:/program files/Sybase/shared/Sun/jdk118/bin;
C:/program files/Sybase/shared/PowerBuilder;
C:/sybase12_5/oledb;
C:/sybase12_5/ODBC;
C:/sybase12_5/asep_win32;
C:/sybase12_5/OCS-12_5/DLL;
C:/sybase12_5/OCS-12_5/lib3p;
C:/sybase12_5/OCS-12_5/bin;
C:/sybase15/dataaccess/adonet/DLL;
C:/sybase15/OCS-15_0/lib3p;
C:/sybase15/OCS-15_0/DLL;
C:/sybase15/OCS-15_0/bin;
C:/Sybase/ADO. Net/DLL;
C:/Sybase/oledb;
C:/Sybase/ODBC;
C:/Sybase/OCS-12_5/lib3p;
C:/Sybase/OCS-12_5/DLL;
C:/Sybase/OCS-12_5/bin;
C:/Sybase/sqlremote/DLL;
C:/Sybase/RPL-12_5/bin;
C:/Sybase/JS-12_5/bin;
C:/Sybase/ASE-12_5/DLL;
C:/Sybase/ASE-12_5/bin;
C:/program files/Sybase/jaruar CTS 3.5/bin;
C:/program files/Sybase/jaruar CTS 3.5/DLL;
C:/program files/Sybase/jaruar CTS 3.5/client/DLL;
C:/program files/Sybase/shared/Sun/jdk118/bin;
C:/program files/Sybase/shared/PowerBuilder;
C:/Sybase/JS-12_5/bin;
Bottom