Welcome
Administering
In addition to administering the database server, you can tune performance, replicate data, and archive data.
System administration
These topics contain concepts, procedures, and reference information for database and database server administrators to use for managing and tuning HCL Informix® database servers.
SNMP Subagent Guide
The describes the Simple Network Management Protocol (SNMP) and the software that you need to use SNMP to monitor and manage HCL Informix® database servers and databases.
Informix® implementation of SNMP
The HCL Informix® implementation of SNMP lets database administrators monitor Informix database servers and databases.
Files installed for SNMP
This section lists the files that are typically installed for the HCL® Informix® implementation of SNMP on UNIX™ and Windows™.
Files installed on UNIX™ or Linux™

HCL Informix® V15.0.0 documentation
Welcome to the documentation for HCL Informix® 15.0.0 and related client tools and products.
Product overview
HCL Informix® is a fast and scalable database server that manages traditional relational, object-relational, and dimensional databases. Its small footprint and self-managing capabilities are suited to embedded data-management solutions.
Installing
These topics describe how to install HCL Informix® database servers, client products, and modules.
Administering
In addition to administering the database server, you can tune performance, replicate data, and archive data.
- System administration
  These topics contain concepts, procedures, and reference information for database and database server administrators to use for managing and tuning HCL Informix® database servers.
  - List of utilities
    HCL Informix® includes utilities and applications that you can use to perform administrative tasks and capture information about configuration and performance.
  - Administrator's Guide
    The HCL® Informix® Administrator's Guide provides the information required to administer HCL Informix.
  - Administrator's Reference
    The HCL® Informix® Administrator's Reference includes comprehensive descriptions of HCL Informix configuration parameters, the system-monitoring interface (SMI) tables in the sysmaster database, the syntax of database server utilities such as onmode and onstat, logical-log records, disk structures, event alarms, and unnumbered error messages.
  - DB-Access User's Guide
    The HCL® Informix® DB-Access User's Guide describes how to use the utility to access, modify, and retrieve information from HCL Informix database servers.
  - High-Performance Loader User's Guide
    The describes how to use the HCL Informix® to load and unload large quantities of data efficiently to or from Informix databases.
  - Performance Guide
    The HCL® Informix® Performance Guide describes how to configure and operate your HCL Informix database server to improve overall system throughput and to improve the performance of SQL queries.
  - SNMP Subagent Guide
    The describes the Simple Network Management Protocol (SNMP) and the software that you need to use SNMP to monitor and manage HCL Informix® database servers and databases.
    - SNMP concepts
      This section provides a brief introduction to Simple Network Management Protocol (SNMP).
    - Informix® implementation of SNMP
      The HCL Informix® implementation of SNMP lets database administrators monitor Informix database servers and databases.
      - Components of the Informix® implementation
      - Purpose of Informix® SNMP
      - SNMP standard
        The SNMP standard has two versions: SNMPv1 and SNMPv2.
      - SNMP architecture
        The architecture for the HCL® Informix® implementation of SNMP depends on your operating system.
      - Informix® implementation of SNMP on UNIX™ or Linux™
      - Informix® implementation of SNMP on Windows™
      - GLS and SNMP
        HCL Informix® products include a Global Language Support (GLS) feature, which lets you work with languages that use code sets other than the standard English code set. However, the SNMP protocols that OnSNMP supports (SNMPv1 and SNMPv2) do not recognize these different code sets.
      - MIB types and objects
        This section describes the types of MIBs and the types of MIB objects that the HCL Informix® database server uses.
      - Table indexing
      - Refresh control value
        As a background task, OnSNMP periodically updates the contents of MIB tables that it derives from catalog information. The refresh control value determines the amount of time that OnSNMP spends refreshing these MIB tables versus the amount of time that it spends responding to queries from the master agent.
      - Files installed for SNMP
        This section lists the files that are typically installed for the HCL® Informix® implementation of SNMP on UNIX™ and Windows™.
        Files installed on UNIX™ or Linux™
        Files installed on Windows™
    - Management Information Base reference
      An SNMP Network Manager hides most of the structures of the Management Information Base (MIB). However, an understanding of this structure can help you comprehend the information that an SNMP Network Manager displays.
- Backup and Restore Guide
  The HCL® Informix® Backup and Restore Guide describes how to use the HCL Informix and ontape utilities to back up and restore database server data. These utilities enable you to recover your databases after data is lost or becomes corrupted due to hardware or software failure or accident.
- Enterprise Replication
  The describes the concepts of data replication using HCL Informix® Enterprise Replication, including how to design your replication system, as well as administer and manage data replication throughout your enterprise.
Migrating and upgrading
You can upgrade to the 15.0.0 release of HCL Informix® or migrate from other database servers to Informix. Upgrading is an in-place migration method that uses your existing hardware and operating system software. Some changes to the Informix database server can affect upgrading from a previous release.
Client APIs and tools
You can use the HCL Informix® implementation of client APIs to develop applications for Informix database servers.
Embedding Informix®
When you embed HCL Informix®, you can use enterprise-class high-availability and high performance with embeddability features such as easy programmability, a small disk and memory footprint, and silent deployment.
Extending Informix®
Beyond standard relational database objects, HCL Informix® can be extended to handle specialized data types, access methods, routines, and other objects. Informix includes many built-in extensions that are fully integrated in the database server. Informix also provides modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for Informix.
Data warehousing
In addition to designing and implementing Informix® dimensional databases, you can use tools to create data warehouse applications and optimize your data warehouse queries.
Designing databases
The first step in creating a relational database is to construct a data model, which is a precise, complete definition of the data you want to store. After you prepare your data model, you must implement it as a database and tables. To implement your data model, you first select a data type for each column and then you create a database and tables and populate the tables with data. You can also implement fragmentation strategies and control access to your data.
JSON compatibility
You can use the popular JSON-oriented query language created by MongoDB to interact with data stored in HCL Informix®.
Security
You can secure your Informix® database server and the data that is stored in your Informix databases. You can encrypt data, secure connections, control user privileges and access, and audit data security.
SQL programming
You can use the HCL Informix® implementation of the SQL language to develop applications for Informix database servers.
Troubleshooting HCL Informix®
Several troubleshooting techniques, tools, and resources are available for resolving problems that you encounter in your HCL Informix® database server environment.

Files installed on UNIX™ or Linux™

The runsnmp.ksh file exists for all UNIX™ versions of SNMP support.

The following files are installed in $INFORMIXDIR/bin.

Table 1. Files installed in $INFORMIXDIR/bin
File name	Description
onsnmp	OnSNMP executable file
onsrvapd	Server discovery process
snmpdm	EMANATE executable or a dummy file for UNIX™ platforms that EMANATE does not support

The following files are installed in $INFORMIXDIR/snmp.

Table 2. Files installed in $INFORMIXDIR/snmp
File name	Description
./snmpr/snmpd.cnf	EMANATE configuration file or a dummy file for UNIX™ platforms that EMANATE does not support
.runsnmp.ksh	Script that starts the master agent and onsrvapd

OnSNMP uses the following log files by default.

Table 3. Default log files
File name	Description
snmp.log	Log file for EMANATE; not installed on UNIX™ platforms that EMANATE does not support
onsrvapd.log	Log file for onsrvapd.
onsnmp..log For HCL Informix®, the path is onsnmp.servername.log*	Log file for onsnmp.