How To Fix ESH_TREX_ADMIN153 - Cannot lock auth-index &1 for update: Technical error with enqueue server

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_TREX_ADMIN - TREX Indexing and Index Administration

• Message number: 153

• Message text: Cannot lock auth-index &1 for update: Technical error with enqueue server

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_TREX_ADMIN153 - Cannot lock auth-index &1 for update: Technical error with enqueue server ?

  The SAP error message ESH_TREX_ADMIN153 indicates that there is a problem with locking the authorization index for an update operation in the TREX (Text Retrieval and Extraction) system. This error typically arises due to issues with the enqueue server, which is responsible for managing locks in the SAP system.
  Cause:
  
  Enqueue Server Issues: The enqueue server may be down or not functioning properly, preventing the system from acquiring the necessary locks.
  Lock Conflicts: Another process may already hold a lock on the authorization index, leading to a conflict when trying to update it.
  Network Issues: Connectivity problems between the application server and the enqueue server can also lead to this error.
  System Configuration: Misconfigurations in the TREX or enqueue server settings can cause locking issues.
  
  Solution:
  
  
  Check Enqueue Server Status:
  
  Use transaction code SM12 to check for existing locks. If there are locks that are no longer needed, you can delete them if you have the necessary authorizations.
  Use transaction code SM21 to check the system log for any errors related to the enqueue server.
  
  
  
  Restart Enqueue Server:
  
  If the enqueue server is down, you may need to restart it. This can typically be done through the SAP Management Console (SAP MMC) or by using transaction SMMS.
  
  
  
  Check for Lock Conflicts:
  
  Investigate if other processes are holding locks on the authorization index. If so, coordinate with the relevant teams to release those locks.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues between the application server and the enqueue server. Check for any firewall settings or network configurations that might be causing connectivity problems.
  
  
  
  System Configuration:
  
  Review the configuration settings for TREX and the enqueue server to ensure they are set up correctly. Consult the SAP documentation or your system administrator for guidance.
  
  
  
  SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that can resolve the issue.
  
  
  
  Related Information:
  
  TREX: TREX is a search and text retrieval engine used in SAP systems for full-text search capabilities.
  Enqueue Server: The enqueue server is a critical component in SAP that manages locks to ensure data consistency during concurrent access.
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (for lock entries), SM21 (for system logs), and SMMS (for monitoring the message server).
  
  If the issue persists after trying the above solutions, it may be necessary to involve SAP support for further assistance.