Trying to run sqlplus from Oracle 19c client on AIX, the following errors occur:
$ sqlplus
Could not load program sqlplus:
Dependent module libsqlplus.so could not be loaded.
Could not load module libsqlplus.so.
System error: No such file or directory
SOLOTION
$ oslevel
7.1.0.0
$ export LIBPATH=$LIBPATH:/u01/oracle/product/19.0.0/client_1/lib
It seems AIX does not use LD_LIBRARY_PATH.