How To Fix GT326 - Operation performed despite DDL lock

GT326 - Overview

• Message type: E = Error

• Message class: GT - Database utilities

• Message number: 326

• Message text: Operation performed despite DDL lock

What causes this issue?

Table D0GEN contains an entry that represents a lock for DDL
statements. This lock is normally set by program tp. DDPROF also
contains an entry saying that this lock should be ignored.

System Response

The requested operation is executed despite the lock.

How to fix this error?

Please read Note 102069 or the section about "tp impsync" in the
documentation on program tp.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

GT326 - Details

• The SAP error message GT326, which states "Operation performed despite DDL lock," typically occurs when a Data Definition Language (DDL) operation is attempted on a database object that is currently locked by another transaction. This can happen in various scenarios, such as when multiple users or processes are trying to modify the same database object simultaneously.
  
  Cause:
  
  DDL Locking: DDL operations (like creating, altering, or dropping tables) acquire locks on the database objects. If another transaction is holding a lock on the same object, the DDL operation may still proceed, but it can lead to inconsistencies or unexpected behavior.
  Long-Running Transactions: If a transaction is taking a long time to complete, it may hold locks longer than expected, causing other operations to be blocked.
  Concurrent Access: Multiple users or processes trying to access or modify the same database object at the same time can lead to DDL locks.
  
  
  Solution:
  
  Identify the Locking Transaction: Use transaction codes