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SecurityYou can secure your HCL OneDB™ database server and the data that is stored in your HCL OneDB™ databases. You can encrypt data, secure connections, control user privileges and access, and audit data security.
Security in HCL OneDB™The HCL OneDB™ 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
Connection securityYou can administer the security of the connections to the database server by using authentication and authorization processes.
Pluggable authentication modules (UNIX™ or Linux™)A Pluggable Authentication Module (PAM) is a well-defined framework for supporting different authentication modules that were originally developed by Sun Microsystems. PAM is supported in both 32- and 64-bit modes on Solaris, Linux™, HP-UX and AIX®.
PAM required stack sizeYou can customize the stack size available for PAM modules.

PAM required stack size

You can customize the stack size available for PAM modules.

The PAM feature loads operating system or third-party PAM modules (shared libraries) into the informix user thread. The stack size requirements of these PAM modules cannot be predicted. For instance, on Linux™ some modules require more than 128 KB of stack space. Use the PAM_STACKSIZE configuration parameter to customize the stack size for PAM modules.

For example, set PAM_STACKSIZE in the onconfig file as follows:

PAM_STACKSIZE 64 # Stack size needed for the PAM modules
(K Bytes)

On UNIX™, the default value of PAM_STACKSIZE is 32 KB.

On Linux, the default value is 128 KB plus the value of the STACKSIZE configuration parameter.