AIX ESQL/C


                            MACHINE SPECIFIC NOTES
                                    FOR
                HCL OneDB Client SDK 1.0.1.0 PRODUCT RELEASE
                     HCL oneDB ESQL/C Version 1.0.1.0
                                On AIX 7.2 64bit
                               DATE: 15 May 2021
                      =================================

OS Information : Built on AIX 7.2 Technology.

Machine Specific Notes
======================

1. This product was built on AIX 7.2 Technology using the
   following compilers:

   IBM XL C/C++ for AIX, V11.1 (5724-X13)
   XL C/C++ Runtime      13.1.3

2. AIX patch requirement:


3. ESQL/C support for static libraries

   ESQL/C product libraries are supported as both static and shared
   libraries. By default the script uses shared libraries.
   To use static libraries, the 'esql' script must be invoked with the
   -static option:

        esql -static

   To use ESQL/C shared libraries, the environment variable LIBPATH
   must include $INFORMIXDIR/lib and $INFORMIXDIR/lib/esql. During
   runtime of the executable, the dynamic loader will look in this
   path for HCL OneDB ESQL/C shared libraries.

      (for Bourne or Korn Shell)
      LIBPATH=$INFORMIXDIR/lib:$INFORMIXDIR/lib/esql:$LIBPATH
      export LIBPATH

      (for C Shell)
      setenv LIBPATH  $INFORMIXDIR/lib:$INFORMIXDIR/lib/esql:$LIBPATH

4. ESQL/C support for thread safe libraries

   The thread safe ESQL/C libraries are supported on this platform using
   POSIX threads. The THREADLIB environment variable must be to POSIX:
       (for Bourne or Korn Shell)
       THREADLIB=POSIX
       export THREADLIB

       (for C Shell)
       setenv THREADLIB POSIX

   To build thread safe ESQL/C programs, use the following command:

       esql -thread prog.ec -o prog

   Applications that have not been compiled with the -thread option cannot be
   linked with applications that have been compiled with the -thread option.
   To do so, compile all applications with the -thread option.

5. IPv6 Support

   The product supports Internet Protocol Version 6 (128 Bit Internet Addresses)
   as well as IPv4 (32 Bit Addresses).

   In order for the machine name specified in the SQLHOSTS file to resolve
   to the correct IP address, the name services files on the Operating System
   should be correctly configured. If the machine has IPv6 address configured
   and the listener thread is bound to an IPv6 address, then the name
   resolution files /etc/netsvc.conf should be configured to fetch IPv6
   address. Also use the appropriate /etc/hosts setting if local machine
   settings are used.

   For compatibility with older HCL oneDB client and server products,
   assign the same hostname with both an IPv4 address and an IPv6 address.
   If the listener needs to be bound to an IPv4 address and the name services
   resolve the name in the order of the IPv6 address followed by IPv4 address,
   then an explicit IPv4 address needs to be put in nodename field of SQLHOSTS
   file. Client applications should also use the same setting.

6. Pluggable Authentication Module (PAM)

   PAM functionality is supported on AIX 7.2 operating systems. The PAM is
   dependent on the libpam.a library supplied by the Operating System vendor.

   Use of PAM can be enabled or disabled by the system administrator. By
   default, HCL OneDB will use the traditional authentication mechanism in
   order to avoid widespread changes required by the users.

   The PAM service identifies the PAM module. This PAM module typically
   resides in /usr/lib/security and its parameters are listed in
   /etc/pam.conf.