Question & Answer
Using 64bit IBM Cognos on 64-bit Linux, attempting to connect to the DB2 datasource results in an error... QE-DEF-0285 The logon failed. QE-DEF-0325 The logon failed for the following reason: RQP-DEF-0068 Unable to connect to at least one database during a multi-database attach to 1 database(s) in: testDataSourceConnection UDA-SQL-0569 Unable to load the driver manager library ( libdb2.so ). UDA-SQL-0571 The operating system returned an error message ( libdb2.so: cannot open shared object file: No such file or directory ). BME-EX-0144 Trace back: BmtPlayTransaction.cpp(738): QFException: CCL_RETHROW: BmtPlayTransaction::DoAction BmtActionsHelper.cpp(466): QFException: CCL_RETHROW: BmtActionsHelper::DoAction QFSSession.cpp(630): QFException: CCL_RETHROW: QFSSession::ProcessDoRequest() QFSSession.cpp(628): QFException: CCL_CAUGHT: QFSSession::ProcessDoRequest() QFSSession.cpp(1380): QFException: CCL_RETHROW: QFSSession::SessionProcessTestConnection() Source/QE_RsApi.cpp(2064): QFException: CCL_RETHROW: QE Source/QEI_ConnectionFault.cpp(807): QFException: CCL_THROW: QE
64bit DB2 client software was installed
64-bit IBM Cognos has 64-bit java components but the native query engine, BIBusTkServer, is a 32-bit application. Therefore, it is necessary to install and configure the 32-bit DB2 client for IBM Cognos.
Refer to the statements regarding support for 64-bit environments at the following location:
Check the following environment variables.
LD_LIBRARY_PATH should includes the 32-bit DB2 client libraries.
PATH should contain the DB2 bin directory.
DB2DIR should point db2 install directory.
Also run a ldd on the libdb2.so to make sure all of it's dependancies are available. On 64bit RedHat installs there may be 32bit packages that aren't installed by default.
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15 June 2018