Starting with Domino R5.0.8, the shell variable Notes_SHARED_DPOOLSIZE (shared memory size) for Domino for Solaris is set automatically as a default to 8126464 bytes which is 7 3/4 MB (or 8 MB minus 256 KB). There is no longer a need to change this manually. Since many simultaneous accesses to a single shared memory segment can cause increased lock contention, so we recommend several smaller (7 3/4 MB) shared memory segments instead of fewer large ones.