No package update is required at this time to use the preinstalled Oracle Solaris 11.3 OS with this server.
If you reinstall the OS, you might need to install certain package updates before you put the server and optional hardware or software components into production.
Install the most recent Oracle Solaris 11.3 Support Repository Update (SRU). Taking this action ensures that your server has the latest software for the best performance, security, and stability.
Use the pkg info entire command to display which SRU is currently installed on your server.
Use the pkg command or the package manager GUI to download any available SRUs from: https://pkg.oracle.com/solaris/support.
See Installing the OS in your servers Installation Guide.