How To Fix RSRCACHE018 - Terminate if enqueue is not obtained

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRCACHE - Messages for OLAP Cache

• Message number: 018

• Message text: Terminate if enqueue is not obtained

What causes this issue?

The cache repeatedly attempts to set an enqueue so that it can work with
a cache entry. If a process cannot set the enqueue after many repeated
attempts (up to 1000 attempts, for example), the system assumes that
there is a problem. To highlight the problem and avoid inconsistencies,
the cache terminates the current process with an error message (x
message). A system administrator can reduce the number of attempts to a
number for which it is quite likely that an enqueue can be set. To allow
the process, that is, the query, to continue to run, you can use this
parameter to specify that the process is not to terminate when an error
message is issued.
This parameter only applies to the cache modes cluster table, BLOB
table, and flat files (both application server dependent and cross
application server).

System Response

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

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSRCACHE018 - Terminate if enqueue is not obtained ?

  The SAP error message RSRCACHE018 indicates that a process is unable to obtain an enqueue lock, which is necessary for resource management in SAP systems. This error typically occurs in the context of resource caching and can lead to the termination of the process if the enqueue cannot be obtained within a specified timeout period.
  Cause:
  The primary causes of the RSRCACHE018 error can include:
  
  Resource Contention: Multiple processes are trying to access the same resource simultaneously, leading to contention and failure to obtain the enqueue lock.
  Deadlocks: A situation where two or more processes are waiting for each other to release resources, causing a deadlock.
  Configuration Issues: Incorrect configuration of the enqueue server or resource management settings.
  High Load: A high number of concurrent requests can lead to resource exhaustion, making it difficult for processes to obtain the necessary locks.
  Long-running Transactions: If a transaction holds onto a lock for an extended period, it can prevent other processes from obtaining the enqueue.
  
  Solution:
  To resolve the RSRCACHE018 error, consider the following steps:
  
  Analyze System Load: Check the system load and performance metrics to identify if there are too many concurrent processes or if the system is under heavy load.
  Check for Deadlocks: Use transaction codes like SM21 (System Log) and SM12 (Display and Delete Locks) to check for deadlocks or long-held locks that may be causing the issue.
  Increase Timeout Settings: If appropriate, consider increasing the timeout settings for enqueue locks in the system configuration.
  Optimize Resource Usage: Review and optimize the code or processes that are competing for the same resources. This may involve refactoring long-running transactions or reducing the number of concurrent requests.
  Review Configuration: Ensure that the enqueue server is properly configured and that there are no issues with the resource management settings.
  Monitor and Tune Performance: Regularly monitor the performance of the SAP system and tune it as necessary to prevent resource contention.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view locks), SM21 (to view system logs), and ST22 (to check for dumps).
  SAP Notes: Check SAP Notes related to RSRCACHE018 for any specific patches or updates that may address known issues.
  Documentation: Review SAP documentation on enqueue management and resource caching for best practices and configuration guidelines.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support or your system administrator for further assistance.