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ABAP_RFC - Thresholds for Resource Allocation If one of the following criteria is not fulfilled, no resources are made available for the parallelization with asynchronous RFC (or triggered by the system in the exceptional case RESOURCE_FAILURE):
Number of available dialog work processes: 1 The standard value is 1. By default, a certain number of dialog work processes are kept free as reserve instances for other purposes, such as system logon or administration programs. For this reason, a greater number of dialog processes must be free, than the number specified in the profile parameter for the standard value.
Percentage of user-specific dialog work processes: 75% BEGIN_SECTION VERSION 5 OUT This default value can be changed using the profile parameter rdisp/rfc_max_own_used_wp. The number of dialog work processes is defined using the profile parameter rdisp/wp_no_dia. END_SECTION VERSION 5 OUT
Percentage of waiting requests in dialog queue: 5% BEGIN_SECTION VERSION 5 OUT This default value (5% of the entire length of the dialog wait queue) can by changed by the rdisp/rfc_max_queue profile parameter. The length of the dialog queues is defined using the profile parameter rdisp/elem_per_queue. END_SECTION VERSION 5 OUT
Percentage of logons to the system: 90% If the percentage of users already logged on exceeds this, then no resources are released. BEGIN_SECTION VERSION 5 OUT This default value can be changed using the profile parameter rdisp/rfc_max_login. The maximum number of logons to a server is configured using the profile parameter rdisp/tm_max_no. END_SECTION VERSION 5 OUT
Percentage of own logons to system: 25% BEGIN_SECTION VERSION 5 OUT This default value (25% of all logons) can be changed using the profile parameter rdisp/rfc_max_own_login. For each RFC, a logon to the target system takes place. END_SECTION VERSION 5 OUT
Percentage of used communication entries: 90% Every server has a limited number of communication channels. The default limit value is 90 per cent. BEGIN_SECTION VERSION 5 OUT This value can be changed using the profile parameter rdisp/rfc_max_comm_entries. The maximum number of communication channels is configured using the profile parameter rdisp/max_comm_entries. Here, one entry for each connection is made for the client and server. END_SECTION VERSION 5 OUT
