Shared library (dsdb2.so) failed to load / IS 8.0 on AIX

Issues
main_program: Fatal Error: Fatal: Shared library (dsdb2.so) failed to load: errno = (2), system message = ( 0509-022 Cannot load module /opt/IBM/InformationServer/Server/DSComponents/bin/dsdb2.so.
0509-150 Dependent module libdb2.a(shr.o) could not be loaded.
0509-022 Cannot load module libdb2.a(shr.o).
0509-026 System error: A file or directory in the path name does not exist.
0509-022 Cannot load module /opt/IBM/InformationServer/Server/DSComponents/bin/dsdb2.so.
0509-150 Dependent module /opt/IBM/InformationServer/Server/DSComponents/bin/dsdb2.so could not be loaded.)

Resolution
Looks like that you are using DB2 plugin. I think that you should put the library path in the dsenv. You will need to stop and re-start the DataStage to pick up the changes in dsenv.