JPH01305742A - Retry system for inter-computer communication - Google Patents

Retry system for inter-computer communication

Info

Publication number
JPH01305742A
JPH01305742A JP63137693A JP13769388A JPH01305742A JP H01305742 A JPH01305742 A JP H01305742A JP 63137693 A JP63137693 A JP 63137693A JP 13769388 A JP13769388 A JP 13769388A JP H01305742 A JPH01305742 A JP H01305742A
Authority
JP
Japan
Prior art keywords
data
computer
retry
transmission
transaction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63137693A
Other languages
Japanese (ja)
Inventor
Hiroshi Sakano
坂野　弘
Susumu Shimizu
晋 清水
Yoshio Nagao
長尾　善生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP63137693A priority Critical patent/JPH01305742A/en
Publication of JPH01305742A publication Critical patent/JPH01305742A/en
Pending legal-status Critical Current

Links

Landscapes

  • Retry When Errors Occur (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To synchronize data on a data transmission side with a data reception side by executing a retry processing by means of a retransmission process on a protocol without executing retry on the reception side when a fault occurs at the time of data reception. CONSTITUTION:Data is transmitted from a computer on data transmission side 10 to a computer on data reception side 20 and it is to be stored in an accumulation file 30. The computer 10 holds transmission data. When transmission data is inputted to the computer 20 as a transaction 1, it is tried to be stored in the file 30. When storage is failed, a retry request is outputted. Retry is not executed in the transaction 1, and it is cancelled, whereby a retransmission request is given to the computer 10. The transmission side retransmits data which has been held. When the data is inputted as a transaction 2, it is stored in the file 30. When it normally completes, a transmission recognition request is given. When the computer 10 recognizes transmission, it destroys transmission data which has been held.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は計算機間通信のリトライ方式に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a retry method for communication between computers.

〔従来の技術〕[Conventional technology]

従来、あるトランザクションが入力され、そのトランザ
クションに起因するデッド・ロック等のリトライ可能な
障害を検出した場合、トランザクションが入力された装
置内で、−件のメツセージ毎にリトライを行っていた。Conventionally, when a certain transaction is input and a retryable failure such as a deadlock caused by the transaction is detected, a retry is performed for every - number of messages within the device to which the transaction was input.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来のリトライ方式では、受信装置内でリトラ
イ処理を行っているため、タイム・アウト等の事象が発
生してしまう可能性がある。この場合、ファイル格納に
よる送達を行っていると、送信側と受信側で同期ずれが
発生するケースがある。In the conventional retry method described above, since retry processing is performed within the receiving device, events such as a timeout may occur. In this case, if delivery is performed by storing a file, a synchronization difference may occur between the sending and receiving sides.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の計算機間通信のリトライ方式は、データ受信側
コンピュータは受信データを蓄積ファイルに格納すると
きにリトライ可能な障害を検出すると該トランザクショ
ンをキャンセルして再送要求を行い、また前記格納が正
常完了すると送達確認を行い、 データ送信側コンピュータは前記送達確認を受信するま
で送信データを保持しておき、また前記再送要求を受け
ると前記保持している送信データをリトライのなめに前
記データ受信側コンピュータに再送するようにしたこと
を特徴とする。In the retry method for intercomputer communication of the present invention, when a data receiving computer detects a retryable failure when storing received data in an accumulation file, it cancels the transaction and issues a retransmission request, and the storage is completed normally. Then, a delivery confirmation is performed, and the data sending computer holds the transmitted data until it receives the delivery confirmation, and upon receiving the retransmission request, the data receiving computer uses the held sending data for retry. The feature is that the data is retransmitted.

〔実施例〕〔Example〕

次に、本発明の実施例を第１図を用いて説明する。 Next, an embodiment of the present invention will be described using FIG.

第１図において、データ送信側コンピュータ１０からデ
ータ受信側コンピュータ２０ヘデータを送信しデータ受
信側コンピュータ２０の蓄積ファイル３０への格納をし
ようとしている。In FIG. 1, data is being transmitted from the data sending computer 10 to the data receiving computer 20 and is being stored in the storage file 30 of the data receiving computer 20.

データ送信側コンピュータ１０では、送信データを保持
しておく。送信データがデータ受信側コンピュータ２０
にトランザクション１として入力すると、蓄積ファイル
３０へ格納しようとするが、蓄積ファイルへの格納に失
敗すると、リトライ要求（デッド・ロック検出等により
）が出力される。しかし、トランザクション１ではリト
ライは行わず、トランザクション１をキャンセルしてデ
ータ送信側コンピュータ１０に対して再送要求を行う。The data transmitting computer 10 holds the transmitted data. The transmitted data is sent to the data receiving computer 20.
When input as transaction 1, an attempt is made to store it in the storage file 30, but if the storage in the storage file fails, a retry request (due to deadlock detection, etc.) is output. However, transaction 1 is not retried, transaction 1 is canceled, and a retransmission request is made to the data sending computer 10.

データ送信側では、再送要求に対して、保持していたデ
ータを再送する。The data transmitting side retransmits the held data in response to the retransmission request.

再送されたデータがトランザクション２としてデータ受
信側コンピュータ２０に入力すると、上述と同様にして
蓄積ファイル３ｏへの格納が行われる。このとき失敗す
ると再びリトライ要求が出されるが、正常完了すると送
達確認要求を行う。When the retransmitted data is input to the data receiving computer 20 as transaction 2, it is stored in the storage file 3o in the same manner as described above. If this fails, a retry request is issued again, but if the request completes normally, a delivery confirmation request is issued.

データ送信側コンピュータ１ｏでは送達確認すると、そ
れまで保持していた送信データを破棄する。When the data sending computer 1o confirms the delivery, it discards the transmitted data held up to that point.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、データ受信時に障害が発
生した場合、従来のように受信側でリトライせず、プロ
トコル上の再送手順によりリトライ処理を行う構成とし
たなめ、データ送信側とデータ受信側のデータの同期を
取る事が出来る。As explained above, the present invention has a configuration in which, when a failure occurs during data reception, retry processing is performed using the retransmission procedure in the protocol instead of retrying on the receiving side as in the conventional case. You can synchronize data on both sides.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示すブロック図である。 １．２・・・トランザクション、１０・・・データ送信
側コンピュータ、２０・・・データ受信側コンピュータ
、３０・・・蓄積ファイル。FIG. 1 is a block diagram showing one embodiment of the present invention. 1.2...Transaction, 10...Data sending computer, 20...Data receiving computer, 30...Storage file.

Claims (1)

【特許請求の範囲】 データ受信側コンピュータは受信データを蓄積ファイル
に格納するときにリトライ可能な障害を検出すると該ト
ランザクションをキャンセルして再送要求を行い、また
前記格納が正常完了すると送達確認を行い、 データ送信側コンピュータは前記送達確認を受信するま
で送信データを保持しておき、また前記再送要求を受け
ると前記保持している送信データをリトライのために前
記データ受信側コンピュータに再送するようにしたこと
を特徴とする計算機間通信のリトライ方式。[Scope of Claims] When the data receiving side computer detects a retryable failure when storing received data in an accumulation file, it cancels the transaction and requests retransmission, and when the storage is completed normally, it confirms delivery. , the data sending computer holds the transmitted data until it receives the delivery confirmation, and upon receiving the retransmission request, resends the held sending data to the data receiving computer for retry. A retry method for computer-to-computer communication that is characterized by:
JP63137693A 1988-06-03 1988-06-03 Retry system for inter-computer communication Pending JPH01305742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63137693A JPH01305742A (en) 1988-06-03 1988-06-03 Retry system for inter-computer communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63137693A JPH01305742A (en) 1988-06-03 1988-06-03 Retry system for inter-computer communication

Publications (1)

Publication Number Publication Date
JPH01305742A true JPH01305742A (en) 1989-12-11

Family

ID=15204602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63137693A Pending JPH01305742A (en) 1988-06-03 1988-06-03 Retry system for inter-computer communication

Country Status (1)

Country Link
JP (1) JPH01305742A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05265785A (en) * 1992-03-12 1993-10-15 Nec Corp Error recovery method for file transfer
JP2009531879A (en) * 2006-03-30 2009-09-03 アリババ グループ ホールディング リミテッド Method and system for message retransmission and method and system for intersystem message delivery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05265785A (en) * 1992-03-12 1993-10-15 Nec Corp Error recovery method for file transfer
JP2009531879A (en) * 2006-03-30 2009-09-03 アリババ グループ ホールディング リミテッド Method and system for message retransmission and method and system for intersystem message delivery
US8412997B2 (en) 2006-03-30 2013-04-02 Alibaba Group Holding Limited Method and system for message retransmission and intersystem message delivery

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