2269928 - Why enduser gets error [ Could not load dynamic library 'libsybaseldap64.so' ] and why there are several versioned ldap libraries ?

While trying to setup ldap user authentication as per http://scn.sap.com/docs/DOC-42763

Following error is observed on IQ 16.0 sp08 pl30
--------
1> validate ldap server secure_primary
2> go

Msg 13677, Level 19, State 0
SQL Anywhere Error -620: Could not load dynamic library 'libsybaseldap64.so'
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LD_LIBRARY_PATH environmental variable has $SYBASE/OCS-15_0/lib3p64 where all ldap libraries are located.
There is no libsybaseldap64.so but several versioned ldap libraries.

--------
$ ls -ltr
total 38892
-rwxr-xr-x 1 sybase sybase 2298264 Aug 16 2011 libsybaseldap64.so.15.7.0
-rwxr-xr-x 1 sybase sybase 2298264 Dec 7  2011 libsybaseldap64.so.15.7.0.1
-rwxr-xr-x 1 sybase sybase 23227   Jan 16 2012 libsybcsi_propertiesconfig26.so
-rwxr-xr-x 1 sybase sybase 23463   Jan 16 2012 libsybcsi_profiler26.so
-rwxr-xr-x 1 sybase sybase 1711748 Jan 16 2012 libsybcsi_openssl26.so
-rwxr-xr-x 1 sybase sybase 437770  Jan 16 2012 libsybcsi_core26.so
-rwxr-xr-x 1 sybase sybase 2298264 Jan 16 2012 libsybaseldap64.so.15.7.0.2
-rwxr-xr-x 1 sybase sybase 2298264 Mar 7  2012 libsybaseldap64.so.15.7.0.3
-rwxr-xr-x 1 sybase sybase 2298264 May 23 2012 libsybaseldap64.so.15.7.0.4
-rwxr-xr-x 1 sybase sybase 22683   Oct 30 2012 libsybcsi_propertiesconfig27.so
-rwxr-xr-x 1 sybase sybase 21931   Oct 30 2012 libsybcsi_profiler27.so
-rwxr-xr-x 1 sybase sybase 1720841 Oct 30 2012 libsybcsi_openssl27.so
-rwxr-xr-x 1 sybase sybase 453481  Oct 30 2012 libsybcsi_core27.so
-rwxr-xr-x 1 sybase sybase 2597288 Oct 30 2012 libsybaseldap64.so.15.7.0.6
-rwxr-xr-x 1 sybase sybase 2298264 Dec 17 2012 libsybaseldap64.so.15.7.0.5
-rwxr-xr-x 1 sybase sybase 2597288 Jan 6  2013 libsybaseldap64.so.15.7.0.7
-rwxr-xr-x 1 sybase sybase 23032   Mar 21 2013 libsybcsi_propertiesconfig28.so
-rwxr-xr-x 1 sybase sybase 21918   Mar 21 2013 libsybcsi_profiler28.so
-rwxr-xr-x 1 sybase sybase 2132212 Mar 21 2013 libsybcsi_openssl28.so
-rwxr-xr-x 1 sybase sybase 453482  Mar 21 2013 libsybcsi_core28.so
-rwxr-xr-x 1 sybase sybase 2597288 Mar 21 2013 libsybaseldap64.so.15.7.0.10
-rwxr-xr-x 1 sybase sybase 2597288 Jul 28 2013 libsybaseldap64.so.15.7.0.11
-rwxr-xr-x 1 sybase sybase 2655743 Jun 10 2014 libsybaseldap64.so.15.7.0.12
-rwxr-xr-x 1 sybase sybase 426449  Jul 16 2014 libsybcsi_core29.so
-rwxr-xr-x 1 sybase sybase 23044   Jul 16 2014 libsybcsi_propertiesconfig29.so
-rwxr-xr-x 1 sybase sybase 21513   Jul 16 2014 libsybcsi_profiler29.so
-rwxr-xr-x 1 sybase sybase 2728721 Jul 16 2014 libsybcsi_openssl29.so
-rwxr-xr-x 1 sybase sybase 2655743 Jul 16 2014 libsybaseldap64.so.15.7.0.13
-rwxr-xr-x 1 sybase sybase 6279 Jul 16 2014 LICENSE.openssl
-rwxr-xr-x 1 sybase sybase 2214 Jul 16 2014 LICENSE.openldap
-rwxr-xr-x 1 sybase sybase 2345 Jul 16 2014 COPYRIGHT.openldap
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Linking libsybaseldap64.so -> libsybaseldap64.so.15.7.0.13 which is the latest versioned library does not resolve the error.

Questions

- Why there are so many multiple versioned ldap libraries ?
- Which ldap library gets loaded ?
- Why it looks for libsybaseldap64.so and fails when there are several other ldap versioned libraries ?

• SAP IQ 16.x & OCS-15_0
• Any platform

ldap ; LD_LIBRARY_PATH ; libsybaseldap64.so ; Could not load dynamic library ; , KBA , BC-SYB-IQ , Sybase IQ , Problem