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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.
Security in HCL Informix®
The Informix® Security Guide documents methods for keeping your data secure by preventing unauthorized viewing and altering of data or database objects, including how to use the secure-auditing facility of the database server.
Auditing data security
Overview of auditing with the Informix® secure auditing facility
Roles for database server and audit administration

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.
- Security in HCL Informix®
  The Informix® Security Guide documents methods for keeping your data secure by preventing unauthorized viewing and altering of data or database objects, including how to use the secure-auditing facility of the database server.
  - Securing data
  - Auditing data security
    - Overview of auditing with the Informix® secure auditing facility
    - Audit administration
    - Audit analysis
    - The onaudit utility
      Use the onaudit utility to manage audit masks and auditing configuration.
    - The onshowaudit utility
      Use the onshowaudit utility to view the audit information from an existing audit trail. You can use this command to extract information for a particular user, database server, or both, making it possible to isolate a particular subset of data from a potentially large audit trail.
    - Audit event codes and fields
      The secure-auditing facility audits certain database server events.
    - The ADTCFG file

Roles for database server and audit administration

The operating-system administrator (OSA) can set up the following roles for database server administration and audit administration, in addition to any administrative roles that your operating system might have:

The database server administrator (DBSA) maintains and tunes the database server
An audit administrator can have either or both of the following roles:
- Database system security officer (DBSSO), who specifies and maintains the audit masks
- Audit analysis officer (AAO), who turns auditing on and off, sets up and maintains the audit configuration, and reads and analyzes audit-trail data

Although role separation provides more secure auditing, these roles are optional. Before the database server software is installed, the OSA, or whoever installs the database server, decides whether to have separate or combined DBSSO and AAO roles for audit administration and who must perform each role.

For detailed information about roles and role separation, see Using role separation. For information about setting up role separation and creating a user group for each role, see your Informix® Installation Guide.