| 摘要 |
PURPOSE:To improve the productivity of a program by detecting a reference system program when a deadlock has been generated, executing automatically a rollback processing of this reference system program and a re-execution processing of a data base operating instruction by a data base managing system and releasing the deadlock. CONSTITUTION:A data base operating instruction storage means 3 stores an issuing state of a data base operating instruction at every process, a cancel process detecting means 5 detects a process which is executing only an input to a data base from in process group related to a deadlock based on storage information stored in the data base operating instruction storage means 3, when the deadlock has been generated, and a canceling/re-executing means cancels and re-executes the data base operating instruction which is being executed of the process which has been detected by a cancel process detecting means 6. Accordingly, when the deadlock is generated, the reference system program is detected and a rollback processing of this reference system program and a re-execution processing of the data base operating instruction can be executed automatically by a data base managing system. |
