How To Fix RT222 - Number of enqueue work processes

RT222 - Overview

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 222

• Message text: Number of enqueue work processes

What causes this issue?

Technical constraints:
There is exactly one server system-wide with Enqueue work processes. At
least one Enqueue work processes must be running on this server. Only
for very large systems would it be appropriate to configure more than
one work process.
You can set the number of these work processes using the system
parameter <ZH>rdisp/wp_no_enq</>.
You can set the name of the Enqueue server using the system parameter
<ZH>rdisp/enqname</>.
For more information about this topic, see SAP Note 39412 (How many
work processes to configure).

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

RT222 - Details

• The SAP error message RT222 indicates that the number of enqueue work processes has reached its limit. This can occur when there are too many enqueue requests being processed, which can lead to performance issues or even system downtime if not addressed.
  
  Cause:
  
  High Load: A sudden increase in the number of transactions or processes that require enqueue locks can lead to this error.
  
  Configuration Issues: The number of enqueue work processes may be set too low for the current workload.
  Long-Running Transactions: If transactions are taking too long to complete, they may hold onto enqueue locks longer than necessary, leading to a backlog.
  Deadlocks: Situations where two or more processes are waiting for each other to release locks can also contribute to this issue.
  
  
  Solution:
  
  
  Increase the Number of Enqueue Work Processes:
  
  You can increase the number of enqueue work processes in the SAP system profile parameters. This is done by modifying the rdisp/wp_no_enq parameter in the