Using Protected Address Spaces

Because modules loaded into a protected address space have controlled communication with the operating system, all modules that must communicate with each other, such as the modules of an e-mail application or a database, should be loaded into the same protected address space. Use the LOAD ADDRESS SPACE = command to load multiple modules into the same space.
If you load an NLM that depends upon another module, such as CLIB, the other module will be loaded automatically into the same address space.
If the same module is loaded into more than one address space, the module's code will be shared among the address spaces. Therefore, loading the module into multiple address spaces does not require additional memory for the module itself. Only data for the required module is unique for each address space.
Even if an NLM is designed to be loaded only once, you can load multiple copies of the NLM, if you load them into different protected spaces.
When you load modules into a protected address space, NetWare assigns whatever amount of memory the loaded modules need, up to a maximum size of 512 MB. The maximum size of a protected address space is fixed, but within that maximum limit, the memory size of the space grows and shrinks as needed by the modules in the space.
If you want the server to clean up address spaces that abend, set the Memory Protection Fault Cleanup parameter to On. If an address space abends, the server removes the space and its modules and returns the resources to the system. Access the parameter from MONITOR > Available Options > Server Parameters > Memory.
If the Memory Protection Fault Cleanup parameter is set to Off, the situation is left to the abend recovery mechanism.