Hi Lars,
Thank you very much fro the reply.
I mention the SQLPLUS and ISQL from a progressive perspective i.e. no ODBC - ODBC and then an attempt from Studio. Theses two actions both took place from the <sid>adm user sid being l01 in this case.
I had thought about the actual OS user being used from studio but (and here my naaivity comes in) I thought that is actually was l01 adm as the .odbc.ini file being used was definitely that one.
In any case, here is the output from the echo on the LD_LIBRARY_PATH and ldd as you mentioned.
Regards
John
linux-9h1r:/usr/sap/L01/HDB00> echo $LD_LIBRARY_PATH
/usr/sap/L01/HDB00/exe:/usr/sap/L01/HDB00/exe/Python/lib:/usr/sap/L01/HDB00/exe/filter:/usr/sap/L01/HDB00/exe/dat_bin_dir:/usr/sap/L01/HDB00/exe/plugins/afl:/usr/sap/L01/HDB00/exe/plugins/lcapps:/usr/sap/L01/HDB00/exe/plugins/repository:/usr/sap/L01/SYS/global/security/lib:/usr/sap/L01/SYS/global/hdb/federation:/usr/sap/L01/HDB00/exe:/usr/sap/L01/HDB00/exe/Python/lib:/usr/sap/L01/HDB00/exe/filter:/usr/sap/L01/HDB00/exe/dat_bin_dir:/usr/sap/L01/HDB00/exe/plugins/afl:/usr/sap/L01/HDB00/exe/plugins/lcapps:/usr/sap/L01/HDB00/exe/plugins/repository:/usr/sap/L01/SYS/global/security/lib:/usr/sap/L01/SYS/global/hdb/federation:/usr/sap/L01/home/ODBC/instantclient_12_1:/usr/local/lib:/usr/sap/L01/home/ODBC/instantclient_12_1:/usr/local/lib:/usr/sap/L01/home/ODBC/instantclient_12_1:/usr/local/lib
linux-9h1r:/usr/sap/L01/HDB00>
linux-9h1r:/usr/sap/L01/HDB00> cd ~/ODBC/instantclient_12_1/
linux-9h1r:~/ODBC/instantclient_12_1> ldd libsqora.so.12.1
linux-vdso.so.1 => (0x00007fff4bbff000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fe35b251000)
libm.so.6 => /lib64/libm.so.6 (0x00007fe35afd7000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fe35adba000)
libnsl.so.1 => /lib64/libnsl.so.1 (0x00007fe35aba2000)
librt.so.1 => /lib64/librt.so.1 (0x00007fe35a998000)
libclntsh.so.12.1 => /usr/sap/L01/home/ODBC/instantclient_12_1/libclntsh.so.12.1 (0x00007fe3579db000)
libodbcinst.so.2 => /usr/sap/L01/home/ODBC/instantclient_12_1/libodbcinst.so.2 (0x00007fe3577ca000)
libc.so.6 => /lib64/libc.so.6 (0x00007fe357452000)
/lib64/ld-linux-x86-64.so.2 (0x00007fe35b8f8000)
libmql1.so => /usr/sap/L01/home/ODBC/instantclient_12_1/libmql1.so (0x00007fe3571dc000)
libipc1.so => /usr/sap/L01/home/ODBC/instantclient_12_1/libipc1.so (0x00007fe356e5e000)
libnnz12.so => /usr/sap/L01/home/ODBC/instantclient_12_1/libnnz12.so (0x00007fe356753000)
libons.so => /usr/sap/L01/home/ODBC/instantclient_12_1/libons.so (0x00007fe35650e000)
libaio.so.1 => /lib64/libaio.so.1 (0x00007fe35630c000)
libclntshcore.so.12.1 => /usr/sap/L01/home/ODBC/instantclient_12_1/libclntshcore.so.12.1 (0x00007fe355d99000)
libltdl.so.7 => /usr/lib64/libltdl.so.7 (0x00007fe355b8f000)