CN104573056A - Database large data volume online migration method based on oracle - Google Patents
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Abstract
The invention discloses a database large data volume online migration method based on the oracle. A data pump expdp/impdp tool is utilized to achieve original data migration, and data migration is achieved by using the Oracle goldengate synchronous increment data and conducting data comparison through Oracle verdiata. By means of the method, cross-platform cross-version data migration and large data volume zero shutdown migration are achieved, and the problem of too long shutdown time in the large data migration process is solved. The method ensures data safety in the migration process, and achieves zero risk of data migration.
Description
Technical field
The present invention relates to the large Data Transference Technology based on oracle database, is exactly a kind of method of moving online based on oracle database big data quantity specifically.
Background technology
What Data Migration was popular says is exactly data transferred to another database from a database.Main use scenes has: according to formal system building test environment, copy to outer net, database server HardwareUpgring etc. from Intranet.Data Migration needs the factor of consideration a lot, such as operating system classification, type of database, version, data structure, data scale, minimum permission downtime etc.
Data pump technology is can being used by two modes of providing based on the DBMS_DATAPUMP of PL/SQL, and one is command mode, and one is the migration completing data based on enterprise's rank graphic interface management tool of WEB.
GoldenGate software provides a single platform, and this platform can be the disaster recovery that any corporate environment realizes one-level second.GoldenGate is a kind of based on the structural data copy mode in daily record, it is by resolving the additions and deletions changeization (data volume only has about 1/4th of daily record) of the online daily record of source database or archive log acquisition data, again by these change application to target database, realize that source database is synchronous with target database, dual-active.Oracle GoldenGate Veridata is that data compare solution, and identifiable design also reports the difference between two activity databases.
The data migration method of current routine has:
1) use the migration of imp/exp instrument, first perform direct-path in storehouse, source and derive operation, then perform import operation at object library.The execution speed of IMP/EXP is mainly limited to disk and network, cannot meet short problem stop time to big data quantity migration.
2) migration of impdp/expdp instrument is used.Perform derivation in storehouse, source equally, perform importing at object library.Operating speed can be greatly improved.IMPDP/EXPDP speed is mainly limited to disk, and disk speed still cannot meet the migration requirement of big data quantity short time.
3) table space migration is used.The metadata of table space is derived, together with data file, copies to new storehouse, then perform metadata and import.Speed is quite fast, but uses restriction ratio more, problem as self-contained in table space, and needs to consider that data encoding is the need of conversion, can only carry out Data Migration to specific database in cross-platform migration.
Summary of the invention
The present invention is directed to the technical matters existed at present, propose a kind of method of moving online based on oracle database big data quantity.
A kind of method of moving online based on oracle database big data quantity of the present invention, the technical scheme solving the problems of the technologies described above employing is as follows: the method uses Legacy tool data pump expdp/impdp, exp/imp and disaster tolerance instrument goldengate completes the migration of large online data, the raw data that main employing Oracle backup logic tool data pump expdp/impdp completes based on time point is moved, use oracle calamity to carry out incremental data migration for instrument goldengate simultaneously, and carry out comparison of data consistency with the use of Oracle verdiata, guarantee data integrity, the Data Migration of cross-platform, cross-version can be realized by the method for the invention, big data quantity zero shuts down migration.
Preferably, the method should moved online based on oracle database big data quantity, by oracle traditional data pump tool expdp/impdp, some for database SCN point data are moved to destination end database online, and by oracle goldengate one-way synchronization technology, incremental data is synchronized to destination end and completes database, use oracle veridata instrument to carry out contrast to source and destination end data simultaneously and guarantee data integrity.
Preferably, the method should moved online based on oracle database big data quantity, mainly comprises the steps:
1) dispose Oracle GoldenGate application program in source and destination end, catch according to migrating objects configuration source and deliver process group, adopt oracle goldengate one-way synchronization pattern, open in source and catch process and delivery process;
2) source current database SCN is recorded;
3) raw data derives by usage data pump expdp instrument;
4) source export being transferred to destination end imports in catalogue;
5) according to source statistical conversion mode, destination end adopts identical pattern that raw data is imported destination end database;
6) to carry out incremental data synchronous for destination end;
7) in source and destination end deploy Oracle Veridatda agent program, agent program is used for connection data storehouse, using Veridata to carry out source and destination end comparing.
The beneficial effect that a kind of method of moving online based on oracle database big data quantity of the present invention compared with prior art has is: the method be one reliably, flexibly, the large data migration method of easy-operating database, avoid data migration process long problem stop time, compare current general transfer method, achieve database zero shutdown and complete Data Migration, to avoid in large data migration process long problem stop time; Realize cross-platform, cross-version Data Migration, avoid data encoding format transfer problem in cross-platform version transition process; Ensure that the security of data in transition process, achieve Data Migration and be free from risk; The method is equally applicable to the online migration of small data quantity database.
Accompanying drawing explanation
Accompanying drawing 1 is the topological diagram of described method of moving online based on oracle database big data quantity.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, a kind of method of moving online based on oracle database big data quantity of the present invention is further described.
A kind of method of moving online based on oracle database big data quantity of the present invention, the raw data that main employing Oracle backup logic tool data pump expdp/impdp completes based on time point is moved, use oracle calamity to carry out incremental data migration for instrument goldengate simultaneously, and carry out comparison of data consistency with the use of Oracle verdiata, guarantee data integrity.Adopt that the present invention can realize the Data Migration of cross-platform, cross-version, big data quantity zero shuts down migration.
Embodiment 1:
A kind of method of moving online based on oracle database big data quantity described in the present embodiment, by oracle traditional data pump tool expdp/impdp, some for database SCN point data are moved to destination end database online, and by oracle goldengate one-way synchronization technology, incremental data is synchronized to destination end and completes database, use oracle veridata instrument to carry out contrast to source and destination end data simultaneously and guarantee data integrity.
Based on the method that oracle database big data quantity moves online described in the present embodiment, as shown in Figure 1, its specific implementation process is as follows:
1) in source and destination end server disposition Oracle GoldenGate application program, catch according to migrating objects configuration source and deliver process group, adopting oracle goldengate one-way synchronization pattern, open in source and catch process and delivery process.Source Goldengate utilizes seizure process (Extract Process) in source database, read Online Redo Log or Archive Log, then resolve, only extract the change of wherein data as increased, deleting, change operation, and relevant information is converted to the self-defining intermediate form of GoldenGate TDM and leaves in queue file (trail file).Queue file is sent to goal systems by ICP/IP protocol by recycling delivery process.
2) record source current database SCN, inquired about by following statement in a database, such as:
1. SQL> Select current_scn from v$database;
2. CURRENT_SCN
3. -----------
4. 1201591.
3) raw data derives by usage data pump expdp instrument, according to actual migration object as schemas, tables mode derives, time point is derived by increasing FLASHBACK_SCN reference record raw data, as FLASHBACK_SCN=1201591, in cross-version migration, derive process in addition and increase version parameter, as version=10.2.0.5.0.
4) the dmp file of source being derived is transferred to destination end server by ICP/IP protocol or shared disk and imports in catalogue.
5) according to source statistical conversion mode, destination end adopts identical pattern such as schemas, tables mode that raw data is imported destination end database.
6) to carry out incremental data synchronous for destination end.Open the Replicate process group of GoldenGate in destination end, destination end opens application process group need use aftercsn parameter, from derivation SCN point, apply incremental data.As: Start replicate [process group name] aftercsn 1201591.
7) in source and destination end server deploy Oracle Veridatda agent program, agent program is used for connection data storehouse, using Veridata to carry out source and ensureing that source and target end data is consistent with destination end comparing.Adopt data from the sample survey way of contrast to carry out comparing for large data objects, after guaranteeing data consistent, Service Database link is pointed to destination end database and close source and namely destination end goldengate process group completes Data Migration simultaneously.
From the specific implementation process of technique scheme, cross-platform, cross-version, zero can be realized by method described in the present embodiment to big data quantity migration and shut down migration, be ensure that the security of data in transition process by usage data contrast instrument, achieve Data Migration and be free from risk; The method is equally applicable to the online migration of small data quantity database.
Above-mentioned embodiment is only concrete case of the present invention; scope of patent protection of the present invention includes but not limited to above-mentioned embodiment; any claims according to the invention and any person of an ordinary skill in the technical field to its suitable change done or replacement, all should fall into scope of patent protection of the present invention.
Claims (8)
1. a method of moving online based on oracle database big data quantity, it is characterized in that, the raw data adopting Oracle backup logic tool data pump expdp/impdp to complete based on time point is moved, use oracle calamity to carry out incremental data migration for instrument goldengate simultaneously, and carry out comparison of data consistency with the use of Oracle verdiata and guarantee data integrity.
2. a kind of method of moving online based on oracle database big data quantity according to claim 1, it is characterized in that, by oracle traditional data pump tool expdp/impdp, some for database SCN point data are moved to destination end database online, and by oracle goldengate one-way synchronization technology, incremental data is synchronized to destination end and completes database, use oracle veridata instrument to contrast source and destination end data simultaneously.
3. a kind of method of moving online based on oracle database big data quantity according to claim 2, is characterized in that, mainly comprise the steps:
Dispose Oracle GoldenGate application program in source and destination end, catch according to migrating objects configuration source and deliver process group, adopt oracle goldengate one-way synchronization pattern, open in source and catch process and delivery process;
Record source current database SCN;
Raw data derives by usage data pump expdp instrument;
Source export being transferred to destination end imports in catalogue;
According to source statistical conversion mode, destination end adopts identical pattern that raw data is imported destination end database;
It is synchronous that destination end carries out incremental data;
In source and destination end deploy Oracle Veridatda agent program, agent program is used for connection data storehouse, using Veridata to carry out source and destination end comparing.
4. a kind of method of moving online based on oracle database big data quantity according to claim 3, it is characterized in that, source Goldengate utilizes seizure process in source database, read Online Redo Log or Archive Log, then resolve, extract the change operation of wherein data, and relevant information is converted to the self-defining intermediate form of GoldenGate TDM and leaves in queue file; Queue file is sent to goal systems by ICP/IP protocol by recycling delivery process.
5. a kind of method of moving online based on oracle database big data quantity according to claim 4, it is characterized in that, derive according to actual migration object, derive time point by increasing FLASHBACK_SCN reference record raw data, and in cross-version migration, derive process increase version parameter.
6. a kind of method of moving online based on oracle database big data quantity according to claim 5, is characterized in that, the dmp file of source being derived is transferred to destination end by ICP/IP protocol or shared disk and imports in catalogue.
7. a kind of method of moving online based on oracle database big data quantity according to claim 6, it is characterized in that, open the Replicate process group of GoldenGate in destination end, destination end is opened application process group and is used aftercsn parameter, from derivation SCN point, apply incremental data.
8. a kind of method of moving online based on oracle database big data quantity according to claim 7, it is characterized in that, data from the sample survey way of contrast is adopted to carry out comparing for large data objects, after guaranteeing data consistent, destination end database is pointed in Service Database link, and closedown source and destination end goldengate process group complete Data Migration simultaneously.
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| CN104899333A (en) * | 2015-06-24 | 2015-09-09 | 浪潮(北京)电子信息产业有限公司 | Cross-platform migrating method and system for Oracle database |
| CN105446809A (en) * | 2015-11-30 | 2016-03-30 | 中国建设银行股份有限公司 | Platform migration method and apparatus |
| CN105550258A (en) * | 2015-12-09 | 2016-05-04 | 浪潮电子信息产业股份有限公司 | DB2 database migration tool for migration between platforms |
| CN105938492A (en) * | 2016-04-14 | 2016-09-14 | 北京思特奇信息技术股份有限公司 | Data synchronization increment tracking method and system |
| CN106055670A (en) * | 2016-06-06 | 2016-10-26 | 中国工商银行股份有限公司 | Inter-system data migration method and device |
| CN106339498A (en) * | 2016-09-05 | 2017-01-18 | 北京微播易科技股份有限公司 | Method, device and system for synchronizing data |
| CN106777126A (en) * | 2016-12-16 | 2017-05-31 | 广东电网有限责任公司电力调度控制中心 | A kind of online data moving method for supporting isomery time series database |
| CN107193943A (en) * | 2017-05-19 | 2017-09-22 | 郑州云海信息技术有限公司 | A kind of method and apparatus of RDBMS online datas migration |
| CN107368569A (en) * | 2017-07-11 | 2017-11-21 | 人人行科技股份有限公司 | Data difference control methods and device, storage medium and processor |
| CN108241618A (en) * | 2016-12-23 | 2018-07-03 | 航天信息股份有限公司 | The method and device of database migration, the method and device of service routine migration |
| CN108536822A (en) * | 2018-04-09 | 2018-09-14 | 平安普惠企业管理有限公司 | Data migration method, device, system and storage medium |
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| CN109299072A (en) * | 2018-10-16 | 2019-02-01 | 郑州云海信息技术有限公司 | A kind of method and device that database migrates online |
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| WO2021185059A1 (en) * | 2020-03-20 | 2021-09-23 | 华为技术有限公司 | Data migration method and apparatus for database |
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| CN112231409B (en) * | 2020-10-23 | 2024-04-26 | 北京人大金仓信息技术股份有限公司 | Database synchronization initialization loading method, device, equipment and storage medium |
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Application publication date: 20150429 |