The archive link for non(engineer) supported (v15.0 and v15.0.x) is still working @ http://infocenter.sybase.com/archive/index.jsp?
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If I go to https://support.sap.com/home.html?url_id=text-SMPHomepage-newsupportportal
I select >
Documentation > select ‘SAP Adaptive Server Enterprise’
> select ‘15.7’
Now on the next page list of versions with (archive) or (web page) icons for each version of the documentation:
The top one is a web page which I can get to… http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.help.ase.15.7.2/title.htm
The bottom one is an archive of a full set of pdf documents for all of v15.7 ESD#2 that I can download…
HTH
-Michael