CN105159970B - A kind of database data migration system and method - Google Patents
A kind of database data migration system and method Download PDFInfo
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- CN105159970B CN105159970B CN201510527770.6A CN201510527770A CN105159970B CN 105159970 B CN105159970 B CN 105159970B CN 201510527770 A CN201510527770 A CN 201510527770A CN 105159970 B CN105159970 B CN 105159970B
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Abstract
This application discloses a kind of database data migration system and method, which includes: state adjustment module, stops write state for the operating status of physical machine platform database to be adjusted to；Data export module for carrying out data export to all data saved in physical machine platform database, and ensures to export the consistency between all data saved in data and physical machine platform database；Data import modul is directed into virtual platform database for that will export data, and the consistency between the data for ensuring to import in virtual platform database and export data.The operating status of physical machine platform data is first adjusted to stop write state, ensures that the stability of source data by the application before exporting data；When exporting data importing data, the consistency before and after data is ensured, it is thus achieved that completely migrating the data in physical machine platform database to the purpose of virtual platform database.
Description
Technical Field
The invention relates to the technical field of virtualized databases, in particular to a database data migration system and a database data migration method.
Background
The virtualization technology is widely applied due to the advantages of being convenient to operate, saving hardware resources and the like. The enterprise internet system gradually changes from a mode of combining a physical machine and an application to a mode of combining the physical machine and a virtualization platform with the application.
The database is a core component in the enterprise internet system. In the process of performing mode conversion on the enterprise internet system by using a virtualization technology, how to completely migrate data in a physical machine platform database to a virtualization platform database is a key problem to be solved in the current mode conversion process of the enterprise internet system.
Disclosure of Invention
In view of this, the present invention provides a database data migration system and method, which achieve the purpose of completely migrating data in a physical machine platform database to a virtualization platform database. The specific scheme is as follows:
a database data migration system, comprising:
the state adjusting module is used for adjusting the running state of the physical machine platform database to a writing-stopping state so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database;
the data export module is used for exporting all data stored in the physical machine platform database to obtain exported data and ensuring the consistency between the exported data and all data stored in the physical machine platform database after the state adjustment module adjusts the running state of the physical machine platform database to be a writing-stop state;
and the data import module is used for importing the export data into a virtualization platform database and ensuring the consistency between the imported data in the virtualization platform database and the export data.
Preferably, the state adjustment module includes:
the working state switching unit is used for switching the working states of all the application programs which are in data connection with the physical machine platform database to a closed state;
the monitoring closing unit is used for closing the monitoring of the physical machine platform database after the working states of all the application programs which are in data connection with the physical machine platform database are switched to a closing state;
and the database restarting unit is used for restarting the physical machine platform data after the monitoring on the physical machine platform database is closed so as to ensure that all current application programs cannot write in the physical machine platform database.
Preferably, the data derivation module includes:
the first information ensuring unit is used for ensuring the consistency between the character set of the physical machine platform database and the character set configured in the physical machine platform database server so as to ensure that messy codes do not occur when data is exported;
a second information ensuring unit, configured to ensure consistency between the cross table in the physical machine platform database and the cross table obtained in the data exporting process;
the data export unit is used for exporting all data stored in the physical machine platform database to obtain export data;
the data import module comprises:
a third information ensuring unit, configured to ensure consistency between the character set of the virtualization platform database and the character set configured in the virtualization platform database server, so as to ensure that no messy codes occur when data is imported;
and the data import unit is used for importing the export data into the virtualization platform database.
Preferably, the data export unit is an EXP tool, and the data import unit is an IMP tool.
Preferably, the data derivation module further includes:
the export information recording unit is used for recording the data export process into an export log;
the data import module further comprises:
and the import information recording unit is used for recording the data import process into the import log.
Preferably, the database data migration system further includes:
the data information checking unit is used for checking the integrity of data in the virtualization platform database, the correctness of a table space, the correctness of a data file state, the correctness of imported object information, the correctness of imported index information, the correctness of database links and the consistency of database modification permission after a data import process;
and the inspection result display unit is used for displaying the inspection result of the data information inspection unit.
The invention also discloses a database data migration method, which comprises the following steps:
adjusting the running state of the physical machine platform database to a writing-stopping state so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database;
data export is carried out on all data stored in the physical machine platform database to obtain export data, and consistency between the export data and all data stored in the physical machine platform database is ensured;
and importing the export data into a virtualization platform database, and ensuring consistency between the imported data in the virtualization platform database and the export data.
Preferably, the process of ensuring consistency between the export data and all data stored in the physical machine platform database includes:
the consistency between the character set of the physical machine platform database and the character set configured in the physical machine platform database server is ensured, so that messy codes are not generated during data export, and the consistency between a cross table in the physical machine platform database and a cross table obtained in the data export process is ensured;
the process of ensuring consistency between imported data and the exported data in the virtualization platform database comprises:
and ensuring the consistency between the character set of the virtualization platform database and the character set configured in the virtualization platform database server so as to ensure that messy codes do not occur when data is imported.
Preferably, the process of data export of all data stored in the physical machine platform database includes: using an EXP tool to export all data stored in the physical machine platform database;
the process of importing the export data into a virtualization platform database comprises: and importing the export data into the virtualization platform database by utilizing an IMP tool.
Preferably, the database data migration method further includes:
and checking the integrity of the data in the virtualization platform database, the correctness of the tablespace, the correctness of the state of the data file, the correctness of the imported object information, the correctness of the imported index information, the correctness of the database link and the consistency of the database modification authority after the data import process, and displaying the checking result.
In the invention, the database data migration system comprises a state adjustment module, a data export module and a data import module; the state adjusting module can be used for adjusting the running state of the physical machine platform database to a writing-stopping state so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database; the data export module can be used for exporting all data stored in the physical machine platform database to obtain exported data and ensuring the consistency between the exported data and all data stored in the physical machine platform database after the state adjustment module adjusts the running state of the physical machine platform database to be a writing-stop state; the data import module is used for importing export data into the virtualization platform database and ensuring consistency between the imported data and the export data in the virtualization platform database. Therefore, before data is exported, the running state of the data of the physical machine platform is adjusted to the writing-stop state by the state adjusting module, so that the data in the database of the physical machine platform cannot be changed in the process of exporting the data, and the stability of source data is ensured; when the data export module exports data, consistency between the exported data and all data stored in a physical machine platform database is ensured; when the data import module imports data, consistency between the imported data and the exported data in the virtualization platform database is ensured, and therefore the purpose of completely migrating the data in the physical machine platform database to the virtualization platform database is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic application structure diagram of a database data migration system according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating an application architecture of a database migration system according to an embodiment of the present invention;
fig. 3 is a flowchart of a database data migration method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a database data migration system, which is shown in figure 1 and comprises:
the state adjusting module 11 is configured to adjust the running state of the physical machine platform database 20 to a writing stop state, so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database 20;
the data export module 12 is configured to, after the state adjustment module 11 adjusts the running state of the physical machine platform database 20 to a writing-stopped state, export all data stored in the physical machine platform database 20 to obtain export data, and ensure consistency between the export data and all data stored in the physical machine platform database 20;
the data import module 13 is configured to import export data into the virtualization platform database 30, and ensure consistency between the imported data and the export data in the virtualization platform database 30.
In the embodiment of the invention, the database data migration system comprises a state adjustment module, a data export module and a data import module; the state adjusting module can be used for adjusting the running state of the physical machine platform database to a writing-stopping state so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database; the data export module can be used for exporting all data stored in the physical machine platform database to obtain exported data and ensuring the consistency between the exported data and all data stored in the physical machine platform database after the state adjustment module adjusts the running state of the physical machine platform database to be a writing-stop state; the data import module is used for importing export data into the virtualization platform database and ensuring consistency between the imported data and the export data in the virtualization platform database.
Therefore, before exporting data, the embodiment of the invention firstly utilizes the state adjustment module to adjust the running state of the data of the physical machine platform into the writing-stop state, so that the data in the database of the physical machine platform cannot be changed in the process of exporting the data, and the stability of the source data is ensured; when the data export module exports data, consistency between the exported data and all data stored in a physical machine platform database is ensured; when the data import module imports data, consistency between the imported data and the exported data in the virtualization platform database is ensured, and therefore the purpose of completely migrating the data in the physical machine platform database to the virtualization platform database is achieved.
The embodiment of the invention discloses a specific database data migration system, and as shown in fig. 2, compared with the previous embodiment, the embodiment further describes and optimizes the technical scheme. Specifically, the method comprises the following steps:
in this embodiment, the state adjustment module 11 may specifically include a working state switching unit 111, a monitoring shutdown unit 112, and a database restart unit 113. Wherein,
the working state switching unit 111 is configured to switch the working states of all the application programs that perform data connection with the physical machine platform database 20 to a closed state;
the monitoring closing unit 112 is configured to close monitoring on the physical machine platform database 20 when the working states of all the application programs in data connection with the physical machine platform database 20 are switched to a closed state;
the database restarting unit 113 is configured to restart the data of the physical machine platform after the monitoring on the physical machine platform database 20 is stopped, so as to ensure that all current application programs cannot perform write operation on the physical machine platform database 20.
In addition, in this embodiment, the data deriving module 12 may specifically include a first information ensuring unit 121, a second information ensuring unit 122, and a data deriving unit 123; the data import module 13 may specifically include a third information ensuring unit 131 and a data import unit 132. Wherein,
the first information ensuring unit 121 is configured to ensure consistency between a character set of the physical machine platform database 20 and a character set configured in a server of the physical machine platform database 20, so as to ensure that no messy codes occur when data is exported;
the second information ensuring unit 122 is configured to ensure consistency between the cross table in the physical machine platform database 20 and the cross table obtained in the data export process;
the data export unit 123 is configured to perform data export on all data stored in the physical machine platform database 20 to obtain export data;
the third information ensuring unit 131 is configured to ensure consistency between the character set of the virtualization platform database 30 and the character set configured in the virtualization platform database 30 server, so as to ensure that no messy code occurs when data is imported;
the data import unit 132 is configured to import export data into the virtualization platform database 30.
In this embodiment, the preferred data export unit 123 is an EXP tool, and the preferred data import unit 132 is an IMP tool. The EXP tool and the IMP tool are a data export tool and a data import tool developed by oracle corporation, respectively.
In order to facilitate the user to refer to the information related to the data exporting and importing processes, the data exporting module 12 in this embodiment may further include an export information recording unit; the data import module 13 may further include an import information recording unit. Wherein,
the export information recording unit is used for recording the data export process into an export log;
and the import information recording unit is used for recording the data import process into the import log.
Further, the database data migration system in this embodiment may further include a data information checking unit and a checking result display unit. Wherein,
the data information checking unit is used for checking the integrity of data in the virtualization platform database 30 after the data import process, the correctness of a table space, the correctness of a data file state, the correctness of the imported object information, the correctness of the imported index information, the correctness of a database link and the consistency of database modification permission;
the inspection result display unit is used for displaying the inspection result of the data information inspection unit.
The embodiment of the invention discloses a database data migration method, which is shown in figure 3 and comprises the following steps:
step S301: adjusting the running state of the physical machine platform database to a writing-stopping state so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database;
step S302: data export is carried out on all data stored in the physical machine platform database to obtain exported data, and consistency between the exported data and all data stored in the physical machine platform database is ensured;
step S303: importing export data into the virtualization platform database, and ensuring consistency between the imported data and the export data in the virtualization platform database.
Specifically, the process of ensuring consistency between the export data and all data stored in the database of the physical machine platform in step S302 includes:
the consistency between the character set of the physical machine platform database and the character set configured in the physical machine platform database server is ensured, so that messy codes are avoided during data export, and the consistency between the cross table in the physical machine platform database and the cross table obtained in the data export process is ensured.
In addition, the process of ensuring consistency between imported data and exported data in the virtualization platform database in step S303 includes:
the consistency between the character set of the virtualization platform database and the character set configured in the virtualization platform database server is ensured, so that messy codes are not generated when data is imported.
In this embodiment, the preferable process of exporting data from all data stored in the database of the physical machine platform includes: using an EXP tool to export all data stored in a physical machine platform database; the preferred process of importing export data into a virtualization platform database comprises: and importing the export data into the virtualization platform database by utilizing an IMP tool.
Further, the database data migration method in this embodiment may further include:
and checking the integrity of data in the virtualization platform database, the correctness of a table space, the correctness of a data file state, the correctness of imported object information, the correctness of imported index information, the correctness of database link and the consistency of database modification permission after the data import process, and displaying the checking result.
According to the embodiment of the invention, before data is exported, the running state of the physical machine platform data is adjusted to the writing-stop state, so that the data in the physical machine platform database is not changed in the process of exporting the data, and the stability of source data is ensured; when the data is exported, the consistency between the exported data and all data stored in a physical machine platform database is ensured; when data is imported, consistency between the imported data and the exported data in the virtualization platform database is ensured, and therefore the purpose of completely migrating the data in the physical machine platform database to the virtualization platform database is achieved.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above detailed description is provided for the database data migration system and method provided by the present invention, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A database data migration system, comprising:
the state adjusting module is used for adjusting the running state of the physical machine platform database to a writing-stopping state so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database;
the data export module is used for exporting all data stored in the physical machine platform database to obtain exported data and ensuring the consistency between the exported data and all data stored in the physical machine platform database after the state adjustment module adjusts the running state of the physical machine platform database to be a writing-stop state;
the data import module is used for importing the export data into a virtualization platform database and ensuring the consistency between the imported data in the virtualization platform database and the export data;
wherein the state adjustment module comprises:
the working state switching unit is used for switching the working states of all the application programs which are in data connection with the physical machine platform database to a closed state;
the monitoring closing unit is used for closing the monitoring of the physical machine platform database after the working states of all the application programs which are in data connection with the physical machine platform database are switched to a closing state;
the database restarting unit is used for restarting the physical machine platform data after the monitoring of the physical machine platform database is closed so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database;
the data export module comprises:
the first information ensuring unit is used for ensuring the consistency between the character set of the physical machine platform database and the character set configured in the physical machine platform database server so as to ensure that messy codes do not occur when data is exported;
a second information ensuring unit, configured to ensure consistency between the cross table in the physical machine platform database and the cross table obtained in the data exporting process;
the data export unit is used for exporting all data stored in the physical machine platform database to obtain export data;
the data import module comprises:
a third information ensuring unit, configured to ensure consistency between the character set of the virtualization platform database and the character set configured in the virtualization platform database server, so as to ensure that no messy codes occur when data is imported;
and the data import unit is used for importing the export data into the virtualization platform database.
2. The database data migration system of claim 1, wherein the data export unit is an EXP tool and the data import unit is an IMP tool.
3. The database data migration system according to claim 2,
the data export module further comprises:
the export information recording unit is used for recording the data export process into an export log;
the data import module further comprises:
and the import information recording unit is used for recording the data import process into the import log.
4. The database data migration system according to any one of claims 1 to 3, further comprising:
the data information checking unit is used for checking the integrity of data in the virtualization platform database, the correctness of a table space, the correctness of a data file state, the correctness of imported object information, the correctness of imported index information, the correctness of database links and the consistency of database modification permission after a data import process;
and the inspection result display unit is used for displaying the inspection result of the data information inspection unit.
5. A database data migration method is characterized by comprising the following steps:
adjusting the running state of the physical machine platform database to a writing-stopping state so as to ensure that all current application programs cannot perform writing operation on the physical machine platform database;
data export is carried out on all data stored in the physical machine platform database to obtain export data, and consistency between the export data and all data stored in the physical machine platform database is ensured;
importing the export data into a virtualization platform database, and ensuring consistency between the imported data in the virtualization platform database and the export data;
the process of adjusting the running state of the physical machine platform database to a writing-stopping state to ensure that all current application programs cannot perform writing operation on the physical machine platform database includes: switching the working states of all application programs in data connection with the physical machine platform database to a closing state, then closing the monitoring of the physical machine platform database, and then restarting the physical machine platform data to ensure that all the current application programs cannot write in the physical machine platform database;
the process of ensuring consistency between the exported data and all data stored in the physical machine platform database includes: the consistency between the character set of the physical machine platform database and the character set configured in the physical machine platform database server is ensured, so that messy codes are not generated during data export, and the consistency between a cross table in the physical machine platform database and a cross table obtained in the data export process is ensured;
the process of ensuring consistency between imported data and exported data in the virtualization platform database includes: and ensuring the consistency between the character set of the virtualization platform database and the character set configured in the virtualization platform database server so as to ensure that messy codes do not occur when data is imported.
6. The database data migration method according to claim 5,
the process of data export of all data stored in the physical machine platform database comprises: using an EXP tool to export all data stored in the physical machine platform database;
the process of importing the export data into a virtualization platform database comprises: and importing the export data into the virtualization platform database by utilizing an IMP tool.
7. The database data migration method according to claim 5 or 6, further comprising:
and checking the integrity of the data in the virtualization platform database, the correctness of the tablespace, the correctness of the state of the data file, the correctness of the imported object information, the correctness of the imported index information, the correctness of the database link and the consistency of the database modification authority after the data import process, and displaying the checking result.
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