AIXTHREAD_SCOPE

Why should AIXTHREAD_SCOPE be set to 'S' on AIX during an RDBMS installation?

Solution

In a multi-processor environment running on an AIX platform, if you are intending to use multi-threaded applications, the OS recommendation is to set the environment variable AIXTHREAD_SCOPE=S before invoking this application. It results in improved performance of the application.
The syntax to set this variable is:

% export AIXTHREAD_SCOPE=S

Please also note that setting AIXTHREAD_SCOPE=S is recommended in Note:169706.1
NOTE: If you set AIXTHREAD_SCOPE=S after installing the RDBMS software, there is no need to relink