Oracle Solaris 10 is now in Extended Support (from Jan 2018) and access to patches is curtailed even if you have an existing Premier support contract. If you need patches going forward contact Oracle to uplift your support to Extended Support which has a premium of 10% (of your current Premier Support value). Years 2 & 3 will be 20%. Now is the time to migrate any Solaris 10 to Solaris 11 if you can. If you have a premier support package on your server you can upgrade to Solaris 11 free of charge and get access to Solaris 11 patches at no charge.
For information about how we can help with a Solaris 11 upgrade e-mail terry[dot]synoptix[dot]ie for details. Start by asking your application provider if they support Solaris 11.