Berkeley DB

AIX

1. I can’t compile and run multithreaded applications.

   Special compile-time flags are required when compiling threaded applications on AIX. If you are compiling a threaded application, you must compile with the _THREAD_SAFE flag and load with specific libraries; for example,“-lc_r”. Specifying the compiler name with a trailing “_r” usually performs the right actions for the system.

   xlc_r ... 
   cc -D_THREAD_SAFE -lc_r ... 

   The Berkeley DB library will automatically build with the correct options.

2. I can’t run using the DB_SYSTEM_MEM option to DBENV→open.

   AIX 4.1 allows applications to map only 10 system shared memory segments. In AIX 4.3, this has been raised to 256K segments, but only if you set the environment variable “export EXTSHM=ON”.

3. I can’t ...