System requirements

Before you install the Informix® database server, make sure that your computer meets the system requirements.

Operating system requirements

The Informix database server system requirements web page lists supported operating systems: http://www.ibm.com/support/docview.wss?uid=swg27013343.

Install the required operating system patches and library files that are listed in the machine notes for your operating system. The machine notes are in the release information or in the doc directory of the media files before installation.

UNIX, Linux®, Mac OS X: The directory on which you plan to install the database server must be local or an NFS-mounted file system with regular operating-system files.

Windows: The drive on which you plan to install the database server must be formatted with NTFS and must have 8.3 file name creation enabled. For Windows 7 and subsequent Windows versions, turn off User Account Control (UAC) security before you install the database server.

Disk space and memory requirements for installation

The following disk space and memory requirements for installing the database server are approximate. The requirements for some operating systems might be lower.

Disk space
Approximately 750 MB of disk space is required for a typical installation.
Some installation choices require more disk space. The installation application informs you of the total disk space that is required by your setup before you copy the binary files to your host computer.
RAM
Approximately 1 GB RAM is required.
Temporary disk space
You can change the location of the temporary directory by setting the IATEMPDIR environment variable before you run the installation application.
UNIX, Linux, Mac OS X: 2 GB free space is required in your temporary directory (/tmp by default). If the temporary directory does not have enough space, the installation application attempts to write the information into the home directory of the user account.
Note: Both the /tmp and $IATEMPDIR filesystem mount options must not have noexec specified.
Windows: 1 GB free space is required in your temporary directory (C:\tmp by default).

Java runtime environment (JRE) requirements

The installation application bundles a Java™ runtime environment that it requires. However, check the machine notes for your operating system platform to determine whether the installation application requires a preinstalled JRE.
Note: Starting Informix server version 14.10.xC11, IBM Java is no longer provided by the installers. User will need to pre-install a properly licensed Java JRE (8 or higher) that will be used to run the installers, and used to set the "extend/krakatoa/jre" for Java UDRs.