Service Pack 6 for Agile PLM 9.2.2 is posted to Oracle Support (Metalink) as patchset 7715201. The readme is posted with the Patchset or through Oracle Technology Network (Select 9.2.2.6 at http://www.oracle.com/technology/documentation/agile.html).
Remember that after 9.2.2.4, SP5 and SP6 are defect only releases. There are no new features in these Service Packs. The defects resolved are documented in the Readme.
In addition to additional defects resolved, SP6 includes the following patches: (From the Readme posted with the Patchset): The contents of this release include the following Patches: Oracle|Agile PLM 9.2.1.3.54, 9.2.1.4.27, 9.2.1.5.1, 9.2.2.1.21, 9.2.2.1.22, 9.2.2.1.24, 9.2.2.1.25, 9.2.2.1.26, 9.2.2.1.27, 9.2.2.1.28, 9.2.2.1.29, 9.2.2.2.22, 9.2.2.2.23, 9.2.2.2.24, 9.2.2.2.25, 9.2.2.2.26, 9.2.2.2.27, 9.2.2.2.28, 9.2.2.2.30, 9.2.2.2.31, 9.2.2.2.32, 9.2.2.2.33, 9.2.2.2.35, 9.2.2.2.37, 9.2.2.2.38, 9.2.2.3.10, 9.2.2.3.11, 9.2.2.3.12, 9.2.2.3.13, 9.2.2.3.14, 9.2.2.3.15, 9.2.2.3.16, 9.2.2.3.17, 9.2.2.3.18, 9.2.2.3.19, 9.2.2.3.20, 9.2.2.3.21, 9.2.2.3.21, 9.2.2.3.23, 9.2.2.3.9, 9.2.2.4.10, 9.2.2.4.12, 9.2.2.4.13, 9.2.2.4.14, 9.2.2.4.15, 9.2.2.4.16, 9.2.2.4.17, 9.2.2.4.19, 9.2.2.4.2, 9.2.2.4.20, 9.2.2.4.4, 9.2.2.4.5, 9.2.2.4.5, 9.2.2.4.8, 9.2.2.4.9, 9.2.2.5.1, and 9.2.2.5.2.