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Installing
These topics describe how to install HCL Informix® database servers, client products, and DataBlade® modules.
Informix® server
These topics describe how to install HCL Informix® database servers.
Installing Informix®
The Informix® Installation Guide describes how to install, configure, and initialize the HCL Informix database server.
Creating a database server after installation
You create a database server by setting mandatory database server properties and then starting the database server.
Preparing connectivity files
Prepare the files that the database server uses to communicate with client applications and with other database servers.

Installing
These topics describe how to install HCL Informix® database servers, client products, and DataBlade® modules.
- Informix® server
  These topics describe how to install HCL Informix® database servers.
  - Installing Informix®
    The Informix® Installation Guide describes how to install, configure, and initialize the HCL Informix database server.
    - Preparing for installation
      Before you install Informix® database server products, you must prepare your system and plan for choices that you must make during the installation process.
    - Running an interactive installation
      You can install the Informix® database server by running the interactive installation application. You can choose a typical or a custom setup.
    - Running non-interactive installations
      You can run non-interactive installations after you first run an interactive installation during which you create an installation template.
    - Installation command syntax
      You can include options to the installation command when you run the command from the command line.
    - Installation troubleshooting
      Installation log files and return codes can provide helpful information about a completed installation or help you identify problems encountered during an installation attempt.
    - Creating a database server after installation
      You create a database server by setting mandatory database server properties and then starting the database server.
      - Setting configuration parameters
        You set configuration parameters that control database server behavior in the onconfig file. The onconfig file is a text file that you create based on a template file. The onconfig file contains many configuration parameters, but most have default values and can be set while the database server is running.
      - Preparing connectivity files
        Prepare the files that the database server uses to communicate with client applications and with other database servers.
      - Setting environment variables
        Set environment variables after you install the database server. If you created a database server during installation, all mandatory environment variables are set, however, you can set optional environment variables.
    - Stopping and starting the database server
      Various configuration tasks require you to stop and then start the database server. Shared memory is initialized every time that the database server starts.
    - Microsoft failover clustering support (Windows)
      HCL Informix® database server supports Microsoft™ Failover Cluster (known as Microsoft Cluster Server, or MSCS, in earlier Windows™ releases). That built-in feature of the Windows operating system can automatically detect and respond to server or application failure, and can balance server workloads.
    - Multiresidency
      Multiple residency refers to multiple database servers and their associated shared memory and disk structures that coexist on a single computer.
    - Removing or modifying Informix® installations
      You can remove Informix® products.
- Client products
  These topics describe how to install HCL Informix® client products.
- DataBlade modules
  These topics describe how to install HCL Informix® DataBlade® modules.
- Informix® warehouse accelerator
  These topics describe how to install HCL Informix® warehouse accelerator.

Preparing connectivity files

Prepare the files that the database server uses to communicate with client applications and with other database servers.

About this task

The connectivity information allows a client application to connect to any Informix® database server on the network. The connectivity data for a particular database server includes the database server name, the type of connection that a client can use to connect to it, the host name of the computer or node on which the database server runs, and the service name by which it is known.

You must prepare the connectivity information even if the client application and the database server are on the same computer or node. You are not required to specify all possible network connections in the sqlhosts file before you start the database server. However, after you add connectivity information to the sqlhosts file, you must restart the database server to make the new connection available.

Procedure

To add connectivity information:

Edit the sqlhosts file to include the correct connectivity information with a text editor or equivalent tool.
- The default name and location of this file is $INFORMIXDIR/etc/sqlhosts (UNIX, Linux, Mac OS X) or %INFORMIXDIR%\etc\sqlhosts (Windows).
- If you set up several database servers to use distributed queries, use either one sqlhosts file to which the INFORMIXSQLHOSTS environment variable points or separate sqlhosts files in each database server directory.
If your system uses Internet Protocol network connections, enter settings in the following files:
- UNIX, Linux, Mac OS X: The /etc/hosts and /etc/services files.
- Windows: The %windir%\system32\drivers\etc\services file.