How To Fix AD089 - Table is locked (see restart log)

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 089

• Message text: Table is locked (see restart log)

What causes this issue?

The object is locked by the database utility. The object should already
be converted, but the conversion process was not correctly terminated.
Data could be lost. Consistency must be ensured before the table can be
edited again.

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?

Please look at the restart log for this object. Choose the menu option
'Restart log'. This contains information such as the function, the
termination point (the last step executed) and the user data. Try also
to find the cause of the error (by looking at the log).
If you are performing a conversion, please note the following:
If step 3 in the restart log (delete current table) has not been
executed, you can unlock the object and edit the object again. Even if
you do not require the data, unlock the object and continue editing the
object.
If step 3 has been executed, the object has been deleted from the
database and the object data is now held in a temporary table.
Unlocking and editing the object causes this table with the temporary
data to be deleted. If you do not want this to happen, you will have to
restart. Online processing is then resumed at the termination point.
In all other cases, you can unlock the object as soon as the cause for
the lock has been determined and any errors that may have occurred
have been corrected.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD089 - Table is locked (see restart log) ?

  The SAP error message AD089, which indicates that a table is locked, typically occurs when a database table is being accessed by another process or transaction, preventing the current operation from proceeding. This can happen in various scenarios, such as during data updates, batch jobs, or when multiple users are trying to access the same data simultaneously.
  Cause:
  
  Concurrent Access: Multiple users or processes are trying to access or modify the same table at the same time.
  Long-Running Transactions: A transaction that takes a long time to complete may hold locks on the table, causing other transactions to wait.
  Unfinished Transactions: A previous transaction may not have been properly completed or rolled back, leaving the table in a locked state.
  Database Locking Mechanisms: The underlying database may have its own locking mechanisms that prevent access to the table.
  
  Solution:
  
  Check the Restart Log: The error message suggests checking the restart log for more details. This log can provide insights into which process is holding the lock.
  Identify the Locking Process:
  
  Use transaction codes like SM12 (for lock entries) to identify which user or process is holding the lock.
  Use SM21 (system log) to check for any related errors or warnings.
  
  
  Terminate the Locking Process: If you identify a process that is holding the lock unnecessarily, you may need to terminate it. This can be done using transaction SM12 to delete the lock entry.
  Wait for the Lock to Release: If the locking process is legitimate and necessary, you may need to wait for it to complete.
  Optimize Long-Running Transactions: Review and optimize any long-running transactions to minimize the time they hold locks.
  Database Administration: If the issue persists, consult with your database administrator to check for any underlying database issues or configurations that may be causing excessive locking.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM21: View system logs for errors and warnings.
  SM37: Monitor background jobs to see if any jobs are causing locks.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to table locking.
  Performance Tuning: Consider performance tuning of your SAP system to reduce the likelihood of locking issues, such as optimizing database queries and improving transaction efficiency.
  
  If the problem persists after trying these solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.