Another user request has locked the record that you requested or the file (table) that contains it. This condition is normally transient. A program can recover by rolling back the current transaction, waiting a short time, and re-executing the operation. For interactive SQL, redo the operation. For C-ISAM programs, review the program logic and make sure that it can handle this case, which is a normal event in multiprogramming systems. You can obtain exclusive access to a table by passing the ISEXCLLOCK flag to isopen. For SQL programs, review the program logic and make sure that it can handle this case, which is a normal event in multiprogramming systems. The simplest way to handle this error is to use the statement SET LOCK MODE TO WAIT. For bulk updates, see the LOCK TABLE statement and the EXCLUSIVE clause of the DATABASE statement.