How To Fix IU595 - Table & already locked for conversion

SAP Error Message - Details

• Message type: E = Error

• Message class: IU - Incremental Conversion (ICNV)

• Message number: 595

• Message text: Table & already locked for conversion

What causes this issue?

The table is already locked for a conversion.

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?

You can either find the table in the list of tables for incremental
conversion in the Monitor or with the Datenbank Utility if it is marked
for a non-incremental conversion.
You first have to perform the marked conversion for this table.

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 IU595 - Table & already locked for conversion ?

  The SAP error message IU595, which states "Table & already locked for conversion," typically occurs when a database table is being altered or converted, and another process is trying to access or modify that table at the same time. This can happen during database migrations, upgrades, or when running certain transactions that require table modifications.
  Cause:
  
  Concurrent Access: Another process or user is currently accessing the table, which prevents the conversion from proceeding.
  Long-running Transactions: A transaction that takes a long time to complete may hold a lock on the table, causing other operations to fail.
  System Maintenance: The system may be undergoing maintenance or updates that involve locking tables for conversion.
  
  Solution:
  
  Identify the Lock: Use transaction codes like SM12 (to view locks) or SM21 (to check system logs) to identify which user or process is holding the lock on the table.
  Wait for Completion: If the lock is due to a long-running transaction, you may need to wait for it to complete.
  Terminate the Lock: If you determine that the lock is unnecessary or stuck, you can terminate the session holding the lock using transaction SM12. However, be cautious with this approach, as it may lead to data inconsistencies.
  Check for Background Jobs: Sometimes, background jobs may be running that are causing the lock. Check transaction SM37 to see if any jobs are currently running that might be affecting the table.
  Schedule Maintenance: If the conversion is part of a planned maintenance activity, ensure that no other processes are scheduled to run concurrently that might access the table.
  Consult Documentation: Review SAP notes or documentation related to the specific table and conversion process for any additional guidance or known issues.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific issues related to the table in question or the conversion process. SAP frequently updates their knowledge base with solutions to common problems.
  System Performance: Monitor system performance to ensure that locks are not being held longer than necessary due to performance issues.
  Database Administration: In some cases, it may be necessary to involve your database administrator to resolve locking issues at the database level.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.