Release notes (UNIX, Linux, and Mac OS X)

The Release notes provide a list of useful topics and links for when you install an IBM® Informix® database product or fix pack.


12.10 is available in several different editions, and each offers different features and function.

For a complete list of what's new and changed in this release, go to

Information about the fixed defects for IBM Informix 12.10.xC12 is available at:


The product announcement letters are available at Search for Informix 12.10 and select Announcement letters. See the announcement for the following information:
  • Detailed product description
  • Product-positioning statement
  • Packaging and ordering details
  • International compatibility information


IBM Informix 12.10 does not support the HP-UX PA-RISC operating system.

System requirements

For information about hardware and software compatibility, see the detailed system requirements document at

Installing IBM Informix 12.10.xC12

For step-by-step installation instructions, see Installing Informix at

The IBM Informix Installation Guide (ids_installg_12.10.pdf) is also available in the product build in PDF format.

If you are migrating from another version of , make sure that you understand all migration requirements and restrictions before you install the product. For migration information, see

The "onsnmp" subagent and Blade Manager utility have been deprecated and will no longer be installed in the next release.

IBM Data Server driver, DataBlade Developers Kit (DBDK) and IBM OpenAdmin Tool (OAT) for Informix will no longer be packaged with the Informix server. The latest version of IBM Data Server driver can be downloaded from The latest version of OAT can be downloaded from

The latest open source drivers for Informix are available at

Known problems

At time of publication, the following problems were known:
  • Removing users when you uninstall the database server

    If there are multiple installations of the product on the computer, and you are uninstalling one of the products, be careful when you use the Remove users and groups option. Do not remove users or groups that are required by the other installations of the product. If you remove users or groups that are required by the other products, the other products will not start or they will be inoperable.