Each operating system has a default maximum shared-memory segment. Make sure your operating system is configured to allow the allocation of a shared-memory segment at least as large as the max memory. Look here to determine the amount of memory Adaptive Server can use on your platform.
| Platform | 32-bit | 64-bit |
|---|---|---|
| HP-UX 11.x (PA-RISC processor) | 2.75 gigabytes | 16 EB1 |
| IBM AIX | 5.x 2.75 gigabytes | 16 EB |
| Sun Solaris 8 (SPARC processor) | 3.78 gigabytes | 16 EB |
| Sun Solaris 8 (Intel x86 processor) | 3.75 gigabytes | chip dependent |
| Red Hat Enterprise Linux (Intel x86 processor) | 2.7 gigabytes | chip dependent |