I'm not sure if this question is directly (SAP) security related, but End of live normally means:
- no patching/bug fixing
- no patching of security vulnerabilities
- no support from vendor
So it may continue to work, unless it breaks and/or you need assistance of the vendor, they most likely will:
- refuse/ ask you to upgrade to a valid version
- ask a lot of money for "extensive support", and will likely be "on best effort", success not guaranteed.
What you could do is to indicate the risk. But ask "formally" that the application owner acknowledges/accepts these risks.
According to the vendor version 9.X is already EoL since 2010 (End of Life Notice for SQL Anywhere Version 9.0.x End of Life Notice: Mobile Enterprise, Database Management - Sybase I…