How To Fix D3145 - Table DBCHECKDB2 is locked; see SM12

SAP Error Message - Details

• Message type: E = Error

• Message class: D3 - CCMS - DB2 on OS390

• Message number: 145

• Message text: Table DBCHECKDB2 is locked; see SM12

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D3145 - Table DBCHECKDB2 is locked; see SM12 ?

  The SAP error message D3145 indicates that the table DBCHECKDB2 is locked, and it suggests checking transaction SM12 for more details. This error typically occurs when a database table is locked due to ongoing processes or transactions that are preventing other operations from accessing it.
  Cause:
  
  Active Locks: The table DBCHECKDB2 is locked by a user or a process that is currently executing a transaction that has not yet been completed or has not been released properly.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing other processes to be blocked.
  System Errors: Sometimes, system errors or crashes can leave locks in place that need to be cleared manually.
  
  Solution:
  
  
  Check Locks in SM12:
  
  Go to transaction SM12 in your SAP system.
  Enter the table name DBCHECKDB2 in the appropriate field and execute the search.
  Identify the user or process that is holding the lock.
  
  
  
  Release Locks:
  
  If you find a lock that is no longer needed (e.g., from a user who has logged off or a process that has failed), you can manually delete the lock entry.
  Be cautious when releasing locks, as this may affect ongoing transactions. Ensure that the process holding the lock is indeed inactive or can be safely interrupted.
  
  
  
  Investigate Long-running Transactions:
  
  If you frequently encounter this issue, investigate the transactions that are taking a long time to complete. You may need to optimize these processes or check for any underlying issues causing delays.
  
  
  
  System Monitoring:
  
  Implement monitoring to track long-running transactions and locks. This can help you proactively manage locks and prevent them from causing issues in the future.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes for any specific guidance related to the DBCHECKDB2 table and its usage in your system.
  
  
  
  Related Information:
  
  Transaction SM12: This transaction is used to manage and monitor locks in the SAP system. It allows you to view, delete, and analyze lock entries.
  Transaction SM21: This transaction can be used to check the system log for any errors or warnings that might provide additional context for the locking issue.
  Transaction ST22: This transaction can be used to check for dumps that may indicate underlying issues causing locks.
  
  If the problem persists after following these steps, consider reaching out to your SAP Basis team or SAP support for further assistance.