It might work but this is whats supported.
Software Requirements
- External Database:
-
Database
Supported Versions
PostgreSQL
Many versions 8.3.x through 9.4.1 have been tested. Since the IM and
Presence Service features are using common PostgreSQL features, all
PostgreSQL 8.3.x – 9.x are supported.
Oracle
Several Oracle versions have been tested. These include 9g, 10g, 11g,
and 12c. Since the IM and Presence features are using very common Oracle
features such as basic SQL statements, Stored Procedures and basic
indexing; we expect that future versions will remain compatible and will be
supported. Cisco plans to include compatibility testing of newer major
Oracle DB releases during future major IM and Presence releases.
Microsoft SQL Server
Testing has been performed using MS SQL 2012 SP3, 2014 SP1, and 2016 SP1
versions. The IM and Presence features use common MS SQL features and it is
expected that future releases and patches will remain compatible.
*Note *
To use Microsoft SQL server as an external database for Persistent Chat
High Availability, you must be running a minimum release 11.5(1)SU2. For
other features, it is supported from 11.5(1).
