In the Oracle Solaris 11 release, the IPS packaging system is used to perform software updates. This simplifies the process of updating a system regardless of whether you are updating single packages or multiple packages as part of an system update.
There are two sources of packages for Oracle Solaris 11 systems. The release repository is for those customers without a support agreement, and the support repository is for those with a support agreement. Each repository requires different steps to complete an OS update. See Determining Your Starting Point to determine which repository, version of the OS, and SRU you are using. Next, follow the steps in the appropriate procedure in Updating a System to Oracle Solaris 11.2.