KR970049780A - Data Consistency Backup Method Using Client-Server Architecture in Distributed Real-Time Database Management System (DBMS) - Google Patents

Data Consistency Backup Method Using Client-Server Architecture in Distributed Real-Time Database Management System (DBMS) Download PDF

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Publication number
KR970049780A
KR970049780A KR1019950054007A KR19950054007A KR970049780A KR 970049780 A KR970049780 A KR 970049780A KR 1019950054007 A KR1019950054007 A KR 1019950054007A KR 19950054007 A KR19950054007 A KR 19950054007A KR 970049780 A KR970049780 A KR 970049780A
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South Korea
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backup
log
client
server
disk
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KR1019950054007A
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Korean (ko)
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KR0175460B1 (en
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한미경
이길행
윤용익
조주현
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양승택
한국전자통신연구원
이준
한국전기통신공사
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1458—Management of the backup or restore process
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1448—Management of the data involved in backup or backup restore
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1471—Saving, restoring, recovering or retrying involving logging of persistent data for recovery

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Hardware Redundancy (AREA)

Abstract

본 발명의 목적은 교환기 백업 기능의 본래목적인 데이터와 디스크의 데이터 일치성을 보장하고 실시간 시스템의 성능을 만족하면서 로그데이터의 손실에도 불구하고 백업 가능한 클라이언트-서버(Client-Server) 구조를 갖는 백업 방법을 제공하는데 있다. 이러한 본 발명은, 첫째, 로그의 손상이나 프로세서간 통신 전송을 위한 백업 프로세서의 주소값 상실등 백업 클라이언트-서버(Client-Server)에 의한 백업 불가능의 경우에도 교환기 시스템의 성능을 저하시키지 않고 디스크와 메모리의 데이터 일치성을 유지시켜 항상 정확한 데이터로 교환기를 운용할 수 있도록 높은 신뢰성을 제공한다. 둘째, 교환기 운용상 최빈 시간을 이용한 메모리 데이터 덤프를 전담하는 오딧 클라이언트-서버(Client-Server) 시스템의 운용으로 신속하고 정확한 데이터 백업 방법을 교환기 시스템에 제공함으로써 교환기 시스템의 성능을 크게 향상시킬 수 있다.An object of the present invention is a backup method having a client-server structure capable of backing up in spite of the loss of log data while ensuring the data consistency of the original data of the exchange backup function and the disk and satisfying the performance of the real-time system. To provide. First, the present invention provides the disk and the disk without degrading the performance of the exchange system even when the backup is not possible by the backup client-server such as log corruption or loss of the address value of the backup processor for interprocessor communication transmission. It maintains data consistency in memory, providing high reliability so that the exchange can be operated with accurate data at all times. Second, by operating the Audit Client-Server system dedicated to the memory data dump using the least time in the exchange operation, the performance of the exchange system can be greatly improved by providing the exchange system with a quick and accurate data backup method. .

Description

분산 실시간 데이타 베이스 관리시스템(DBMS)에서의 클라이언트-서버 (Client-Server) 구조를 이용한 데이터 일치성 보장 백업 방법Data Consistency Backup Method Using Client-Server Architecture in Distributed Real-Time Database Management System (DBMS)

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 ATM 교환기 시스템의 분산 구조를 갖는 주기억장치 DBMS의 구조도1 is a structural diagram of a main memory DBMS having a distributed structure of an ATM switch system.

제2도는 분산 실시간 시스템인 ATM교환기 시스템상에서 백업기능을 처리하기 위한 관련 블럭간의 구성 및 메세지의 흐름을 나타낸 구조도2 is a structural diagram showing the configuration and message flow between related blocks for processing a backup function in an ATM switch system which is a distributed real-time system.

제3도는 ATM교환기 시스템의 백업 기능을 처리하기 위한 전체적인 흐름도3 is an overall flowchart for handling the backup function of an ATM switch system.

Claims (3)

ATM 교환시스템의 실시간 데이타 베이스 관리 시스템에 적용되어 디스크와 메모리의 일치성 유지를 위한 백업 방법에 있어서, 응용 프로그램으로부터 백업 릴레이션에 대한 변경요구를 받으면(1) 메모리 OB의 변경 요구를 하는(2) 제1단계; DB에 실제적으로 변경을 수행하며, 변경 요구 내용이 데이터 추가, 삭제인 경우는 D/D정보를 변경시키고(3), 디스크 DB의 백업을 위해 변경 버퍼에 DB 및 D/D변경 내용을 기록하는(4) 제2단계;작업이 완료되었음을 알리고(5) 작업완료를 수신한 후, 변경버퍼를 백업 클라이언트로 전송시키는 제3단계; 백업-클라이언트는 전송받은 변경버퍼를(8) 디스크 DB에 적용할 수 있는 형태인 로그로 제작을 하고 로그제작이 성공적으로 끝났음을 알리고(10) 로그제작 완료를 전송받은 후, 응용프로그램에게 변경요구가 완료되었음을 알리는 제4단계; 로그를 전송하기 위해 스풀버퍼내에 저장된 로그를 체크하며 이 과정에서 로그가 손상되었거나 프로세서간(IPC) 전송이 불가능한지를 체크하는 제5단계(13); 로그를 손상되지 않았고 IPC 전송도 가능한 경우에 백업 클라이언트-서버를 이용한 데이터 백업을 진행하는 제6단계; 및 로그 수신이 불가능한 경우 오딧(Audit) 클라이언트를 이용한 백업을 진행하는 제7단계를 포함하는 것을 특징으로 하는 분산 실시간 데이타 베이스 관리시스템(DBMS)에서의 클라이언트-서버(Client-Server) 구조를 이용한 데이터 일치성 보장 백업 방법.Applied to the real-time database management system of the ATM switching system, a backup method for maintaining disk-memory consistency, when a change request for a backup relation is received from an application program (1) is requested to change the memory OB (2). First step; When the change request is data addition or deletion, the D / D information is changed (3) and the DB and D / D changes are recorded in the change buffer for backup of the disk DB. (4) a second step; a third step of notifying that the operation is completed (5) receiving the completion of the operation and transmitting the change buffer to the backup client; The backup-client makes the changed change buffer (8) into a log that can be applied to the disk DB, informs that the log production has been completed successfully (10), and receives the change of log production. A fourth step of notifying that the process is completed; A fifth step (13) of checking a log stored in the spool buffer to transmit the log and checking whether the log is damaged or cannot be transmitted between processors (IPC) in this process; A sixth step of performing data backup using a backup client-server when the log is not damaged and IPC transmission is possible; And a seventh step of performing a backup using an audit client when the log reception is not possible. Data using a client-server structure in a distributed real-time database management system (DBMS). Consistent backup method. 제1항에 있어서, 상기 제6단계는, 백업 서버로 로그를 전송하는 과정, 로그를 수신한(15)후 자신의 로그스풀에 수신한 로그를 저장하는(16) 과정, 백업 클라이언트에게 로그 전송이 완료되었음을 알린(17) 후, 운용 유지 보수프로세서 디스크에 로그 수신내용을 백업하는 과정을 포함하는 것을 특징으로 하는 분산 실시간 데이타 베이스 관리시스템(DBMS)에서의 클라이언트-서버(Client-Server) 구조를 이용한 데이터 일치성 보장 백업 방법.The method of claim 1, wherein the sixth step comprises the steps of: transmitting the log to the backup server; storing the received log in its log spool (16) after receiving the log (15); After notifying (17) that this is completed, the client-server structure in the distributed real-time database management system (DBMS) comprising the step of backing up the log reception contents to the operation maintenance processor disk. Data consistency guarantee backup method. 제2항에 있어서, 상기 제7단계는, 오딧 클라이언트에게 변경되어야 하는 릴레이션의 ID 값을 전송하는 과정, 릴레이션의 ID 값을 수신한 오딧 클라이언트가 변경할 릴레이션에 관한 정보를 읽어 오딧 서버에게 전송하는 과정, 변경할 릴레이션에 관한 정보를 수신한(24) 오딧 서버가 오딧 클라이언트에게 변경할 릴레이션의 정보전송이 완료되었음을 알리고(25) 운용유지보수 프로세서의 디스크에 수신한 정보를 덤프(Dump)하는 과정을 포함하는 것을 특징으로 하는 분산 실시간 데이타 베이스 관리시스템(DBMS)에서의 클라이언트-서버(Client-Server) 구조를 이용한 데이터 일치성 보장 백업 방법.The method of claim 2, wherein the seventh step comprises: transmitting an ID value of a relation to be changed to the audit client, and transmitting information to the audit server by reading the information on the relation to be changed by the audit client receiving the relation ID value. And (24) receiving the information on the relation to be changed, the audit server notifying the audit client that the information on the relation to be changed is completed (25) and dumping the received information to the disk of the operation maintenance processor. Data consistency guarantee backup method using a client-server structure in a distributed real-time database management system (DBMS), characterized in that. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950054007A 1995-12-22 1995-12-22 Data Consistency Backup Method Using Client-Server Architecture in Distributed Real-Time Database Management System KR0175460B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319383B1 (en) * 1999-11-08 2002-01-09 김진찬 Apparatus for processing data base file backup in an exchange
KR100319742B1 (en) * 1998-12-01 2002-02-19 오길록 Replication method of distributed dbms

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100617765B1 (en) * 1999-08-28 2006-08-28 삼성전자주식회사 Distributed dbms cache management system for real-time distributed odbms in telecommunication systems
KR100778182B1 (en) * 2001-03-23 2007-11-22 엘지노텔 주식회사 Method of Managing Data Back-up in Switching System

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319742B1 (en) * 1998-12-01 2002-02-19 오길록 Replication method of distributed dbms
KR100319383B1 (en) * 1999-11-08 2002-01-09 김진찬 Apparatus for processing data base file backup in an exchange

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