Subsystem Control Point (SCP) Management Programming Manual

Event Messages
Subsystem Control Point (SCP) Management Programming Manual—520619-001
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20 ZSCP-EVT-ACB-FULL
ZSCP-TKN-ERRCODE
contains the error code returned by the file system.
Cause. The SCP process uses the READUPDATE procedure to read incoming
command messages from its $RECEIVE file. If no response is required, the SCP
process completes the command message using the REPLY procedure. If the REPLY
procedure does not complete with condition code CCE (condition code equal), the
command-message originator is left with an uncompleted command message.
Effect. The SCP process issues this event message and continues processing. SCP uses
the FILEINFO or FILE_GETINFO_ procedure to obtain the file-system error related to
the failure. This error is indicated by ZSCP-TKN-ERRCODE.
Recovery. If your application is accumulating uncompleted command messages, it
should look for this event message. Recovery depends on the file-system error. If the
event begins to repeat, notify the system manager.
20 ZSCP-EVT-ACB-FULL
The SCP process access control block (ACB, containing SCP process openers) is full.
Cause. The SCP process ACB is full. Too many processes are trying to use the SCP
process. The ACB can contain a maximum of 1000 entries, so a single SCP process can
support no more than 1000 openers.
Effect. The SCP process issues this event message and stops reading command
messages until space is reclaimed in the table (when an opener of the SCP process closes
it).
Recovery. Divide the processing load by starting and opening additional SCP
processes. If the event begins to repeat, notify the system manager.
21 ZSCP-EVT-RCB-FULL
The SCP process command message control block (RCB) is full (contains 255 command
messages).
Tokens in Event Message
(contains only standard event-message tokens)
Message Text
Application open table full
Tokens in Event Message
(contains only standard event-message tokens)
Message Text
Request table full