CN105955845A - Data recovery method and device - Google Patents
Data recovery method and device Download PDFInfo
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- CN105955845A CN105955845A CN201610269996.5A CN201610269996A CN105955845A CN 105955845 A CN105955845 A CN 105955845A CN 201610269996 A CN201610269996 A CN 201610269996A CN 105955845 A CN105955845 A CN 105955845A
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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
- G06F11/1448—Management of the data involved in backup or backup restore
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
- G06F11/3476—Data logging
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
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Abstract
The invention provides a data recovery method and a data recovery device. The method comprises the following steps of: enabling a log record function in advance; receiving data recovery requests; determining a first time point and a second time point corresponding to the data recovery requests, wherein the first time point is ahead of the second time point; acquiring first data, of a database, corresponding to the first time point; acquiring target logs recorded between the first time point and the second time point; and running the target logs by employing the first data to obtain second data, of the database, corresponding to the second time point. According to the scheme, operations executed on the database can be recorded by enabling the log record function, and the first time point and the second time point corresponding to the data recovery requests are determined; and the logs between the first time point and the second time point are run by acquiring and employing the first data corresponding to the first time point, thus the second data corresponding to the second time point can be exactly recovered.
Description
Technical field
The present invention relates to technical field of data security, particularly to a kind of data reconstruction method and device.
Background technology
In business administration, some application systems all can use data base to store various information, therefore,
The data that data base is stored have high importance, if when user is when operating data base
There occurs maloperation, its influence degree is the biggest.At present, user, data base is carried out maloperation
When causing loss of data, loss data can be carried out by the data do not lost and by memory by user
Completion.But, prior art accuracy rate is relatively low.
Summary of the invention
Embodiments provide a kind of data reconstruction method and device, so that data accurately to be recovered.
First aspect, embodiments provides a kind of data reconstruction method, opens log recording in advance
Function；Described method also includes:
Receive data recovery request；
Determine first time point and the second time point that described data recovery request is corresponding；Wherein, described
Before one time point is positioned at described second time point；
Obtain the first data that data base is corresponding when described first time point；
Obtain the target journaling of record from described first time point to described second time point；
Utilize described first data, run described target journaling, obtain data base at described second time point
Time corresponding the second data.
Preferably, farther include: select initial time point, and for data base at described initial time
Data corresponding during point back up；
The described first time point and the second time point determining that described data recovery request is corresponding, including: root
Determine the second time point carried according to described data recovery request, described initial time point is defined as described
First time point.
Preferably, farther include: set backup cycle；
Farther include: when often arriving described backup cycle, data current in data base are backed up；
The described first time point and the second time point determining that described data recovery request is corresponding, including: root
Determine the second time point carried according to described data recovery request, and determine apart from described second time point
Time point corresponding when closely once backing up, using this time point as described first time point.
Preferably, farther include: the configuration file of configuration log writing function, described configuration file bag
Include: log recording mode, and, journal file store path, daily record synchronization, journal file maximum take
At least one in amount；
Described log recording mode includes: all operations in database of record performed data, record is held
Time point corresponding during each operation of row, and record the data performed after each operation.
Preferably, farther include:
The attribute information of configuration database；Described attribute information includes: when accessing the maximum connection of data base
Obtain when time maximum number of connections long, same, coded format, every time access in the maximum quantity of character string
At least one.
Second aspect, the embodiment of the present invention additionally provides a kind of Data Recapture Unit, including:
Open unit, be used for opening log recording function；
Receive unit, be used for receiving data recovery request；
Determine unit, for determining the first time point and the second time point that described data recovery request is corresponding；
Wherein, before described first time point is positioned at described second time point；
First acquiring unit, for obtaining the first data that data base is corresponding when described first time point；
Second acquisition unit, for obtaining record from described first time point to described second time point
Target journaling；
Recovery unit, is used for utilizing described first data, runs described target journaling, obtain data base and exist
The second data corresponding during described second time point.
Preferably, farther include: select unit, be used for selecting initial time point；
Farther include: the first backup units, for for data base's correspondence when described initial time point
Data back up；
Described determine unit, specifically for determining the second time point carried according to described data recovery request,
Described initial time point is defined as described first time point.
Preferably, farther include: setup unit, be used for setting backup cycle；
Farther include: the second backup units, in time often arriving described backup cycle, in data base
Current data back up；
Described determine unit, specifically for determining the second time point carried according to described data recovery request,
And determine time point corresponding when described second time point the last time backs up, by this time point
As described first time point.
Preferably, farther include: the first dispensing unit, for the configuration literary composition of configuration log writing function
Part, described configuration file includes: log recording mode, and, journal file store path, daily record synchronize,
At least one in journal file maximum occupancy；
Described log recording mode includes: all operations in database of record performed data, record is held
Time point corresponding during each operation of row, and record the data performed after each operation.
Preferably, farther include:
Second dispensing unit, for the attribute information of configuration database；Described attribute information includes: access
Obtain when the maximum connection duration of data base, same time maximum number of connections, coded format, every time access
At least one in the maximum quantity of character string.
Embodiments provide a kind of data reconstruction method and device, by opening log recording function
Record the operation that data base is performed, and determine first time point that data recovery request is corresponding and the
Two time points, first data corresponding by obtaining first time point, when utilizing the first data run the first
Between o'clock to the daily record between the second time point, such that it is able to return to that the second time point is corresponding accurately
Two data.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is some embodiments of the present invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of method flow diagram that one embodiment of the invention provides；
Fig. 2 is the another kind of method flow diagram that one embodiment of the invention provides；
Fig. 3 is the hardware structure figure of the device place equipment that one embodiment of the invention provides；
Fig. 4 is a kind of apparatus structure schematic diagram that one embodiment of the invention provides；
Fig. 5 is the another kind of apparatus structure schematic diagram that one embodiment of the invention provides；
Fig. 6 is another apparatus structure schematic diagram that one embodiment of the invention provides；
Fig. 7 is another apparatus structure schematic diagram that one embodiment of the invention provides；
Fig. 8 is another apparatus structure schematic diagram that one embodiment of the invention provides.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments, based on
Embodiment in the present invention, those of ordinary skill in the art are institute on the premise of not making creative work
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
As it is shown in figure 1, embodiments provide a kind of data reconstruction method, open daily record note in advance
Recording function；The method may comprise steps of:
Step 101: receive data recovery request.
Step 102: determine first time point and the second time point that described data recovery request is corresponding；Its
In, before described first time point is positioned at described second time point.
Step 103: obtain the first data that data base is corresponding when described first time point.
Step 104: obtain the target day of record from described first time point to described second time point
Will.
Step 105: utilize described first data, run described target journaling, obtains data base described
The second data corresponding during the second time point.
According to above-described embodiment, record the operation to data base's execution by opening log recording function,
And determine the first time point and the second time point that data recovery request is corresponding, by obtaining the very first time
The first data that point is corresponding, utilize the daily record between the first data run first time point to the second time point,
Such that it is able to return to the second data that the second time point is corresponding accurately.
In an embodiment of the invention, recover to realize data, need to back up primary data, to protect
Card, when running log, can run on the basis of this primary data, and therefore, the present embodiment can
To perform following operation:
Farther include: select initial time point, and for data base's correspondence when described initial time point
Data back up；
The described first time point and the second time point determining that described data recovery request is corresponding, including: root
Determine the second time point carried according to described data recovery request, described initial time point is defined as described
First time point.
Owing to the data corresponding when initial time point take up room less, it is thereby possible to select backup should
Data corresponding during initial time point, such that it is able to save space and reduce the maintenance cost to Backup Data.
In an embodiment of the invention, in order to improve the efficiency that data are recovered, can perform to operate as follows:
Farther include: set backup cycle；
Farther include: when often arriving described backup cycle, data current in data base are backed up；
The described first time point and the second time point determining that described data recovery request is corresponding, including: root
Determine the second time point carried according to described data recovery request, and determine apart from described second time point
Time point corresponding when closely once backing up, using this time point as described first time point.
According to above-described embodiment, by setting backup cycle, when often arriving backup cycle, to data base
Current data back up, and are determining that data recovery request returns to the number of the second time point for request
According to time, time point corresponding when distance the second time point the last time can be backed up as first time point,
Operation owing between first time point and the second time point performing data base is less, when utilizing first
Between put correspondence the first data run first time point to the second time point between daily record time, running log
Time very fast, such that it is able to improve the efficiency that data are recovered.
In an embodiment of the invention, in order to realize utilizing daily record to the recovery of data in data base, can
To perform following operation:
Farther including: the configuration file of configuration log writing function, described configuration file includes: daily record
Recording mode, and, in journal file store path, daily record synchronization, journal file maximum occupancy extremely
Few one；
Described log recording mode includes: all operations in database of record performed data, record is held
Time point corresponding during each operation of row, and record the data performed after each operation.
According to above-described embodiment, by configuration log recording mode, when can record each operation of execution
Corresponding time point, and record the data performed after each operation, determine phase according to this daily record
Data after the time point answered and operation corresponding to this time point, such that it is able to realize the quick of data
Recover.
In an embodiment of the invention, may further include: the attribute information of configuration database；Institute
State attribute information to include: access the maximum of data base and connect duration, same time maximum number of connections, coding
At least one in the maximum quantity of character string is obtained when form, every time access.
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings and specifically real
The present invention is described in further detail to execute example.
As in figure 2 it is shown, embodiments provide a kind of data reconstruction method, the method can include
Following steps:
Step 201: open log recording function.
In the present embodiment, by starting script or the writing function of daily record can be opened in order line.
Step 202: the configuration file of configuration log writing function.
In the present embodiment, this configuration file may include that log recording mode, and, journal file is deposited
At least one in storage path, daily record synchronization, journal file maximum occupancy；
Wherein, log recording mode may include that all operations in database of record performed data,
Record performs time point corresponding during each operation, and record has performed the number after each operation
According to.
Such as, this log recording mode is used for realizing under automatic real time record all of dml behaviour in data base
Making and ddl operates, wherein, dml operation refers at defined in data base table or deletes a table
Operation；Refer to write in the table of definition, change, delete the operation of data during ddl operation.
Wherein, this journal file store path refers to the daily record storage position generated.
Wherein, when daily record synchronizes to refer to log in same data base on different server, generating this
During the daily record operating correspondence that data base performs, can carry out synchronize with the daily record on different server, from
And can ensure that when data are recovered, it is possible to recover data accurately.
Wherein, journal file maximum occupancy refers to taking up room of a journal file, such as, 10M,
When the occupancy of a journal file is 10M, then can store this journal file, and regenerate
New journal file carries out record to data base.Not only when the journal file that each time period of lookup is corresponding
Convenient, the most convenient when running log file.
Step 203: the attribute information of configuration database.
In the present embodiment, this attribute information includes: accesses the maximum of data base and connects duration, with for the moment
Between maximum number of connections, coded format, obtain when accessing every time in the maximum quantity of character string at least one.
Wherein, this access data base maximum connects duration and has referred to apply when accessing this data base general
Can attempt connecting, if there is no these data of successful connection in the maximum connection duration accessing data base of configuration
Storehouse, then can configure and return mistake to this application, and the trial refusing this application connects.Such as, this room
A length of 2s when the maximum of room data base connects.
Wherein, same time maximum number of connections can be joined according to the maximum visit capacity that data base can bear
Putting, such as, this same time maximum number of connections is 10.If connecting number in the same time to have equalized to
When 10, then its connection request then can be directly refused in the application again attempting to connect data base.
Wherein, coded format refers to the coding in data base, such as, is Chinese, Korean, Japanese etc..
Wherein, this maximum quantity obtaining character string when every time accessing can be 1M.
Step 204: provide service for each application accessed according to the attribute information of the data of configuration.
Step 205: receive data recovery request.
Step 206: determine first time point and the second time point that data recovery request is corresponding, wherein,
Before first time point is positioned at the second time point.
In the present embodiment, this second time can be determined by the time point carried in data recovery request
Point, wherein, this second time point is that the data in data base are recovered to be somebody's turn to do by data recovery request for request
Data corresponding during time point.
In the present embodiment, can determine that data recovery request is corresponding by the following two kinds mode first
Time point:
1, select initial time point, and carry out for the data that data base is corresponding when described initial time point
Backup；Initial time point is defined as first time point.
Such as, when database sharing is initial using this initial time point as first time point, when this is initial
Between put correspondence data be defined as the first data.Which is advantageous in that can be recovered from this initial time
The data of any time after Dian.
2, set backup cycle, when often arriving backup cycle, data current in data base are backed up；
Determine distance the second time point the last time time point corresponding when backing up, using this time point as
One time point.
Such as, this backup cycle is 1 month.Monthly the data that this is current are backed up by No. 1, if the
Two time points are October 5, then this first time point may determine that as October 1.Which
The operation being advantageous in that between first time point and the second time point is less, in the daily record running this period
Time speed, such that it is able to improve data recover efficiency.
Step 207: obtain the first data that first time point is corresponding.
Step 208: obtain the target journaling between first time point and the second time point.
In the present embodiment, different instruments can be used when checking daily record for different data bases,
Such as, for MYSQL database, it is possible to use the management instrument mysqlbinlog carried is to check day
Will, thus obtain out the target journaling between first time point and the second time point.
Step 209: utilize the first data, operational objective daily record, obtains data base when the second time point
The second corresponding data.
As shown in Figure 3, Figure 4, a kind of Data Recapture Unit is embodiments provided.Device is implemented
Example can be realized by software, it is also possible to realizes by the way of hardware or software and hardware combining.From hardware
For aspect, as it is shown on figure 3, the one of the Data Recapture Unit place equipment provided for the embodiment of the present invention
Kind of hardware structure diagram, except the processor shown in Fig. 3, internal memory, network interface and non-volatile deposit
Outside reservoir, in embodiment, the equipment at device place generally can also include other hardware, such as responsible process
Forwarding chip of message etc..As a example by implemented in software, as shown in Figure 4, as on a logical meaning
Device, being the CPU by its place equipment refers to computer program corresponding in nonvolatile memory
Order reads and runs formation in internal memory.The Data Recapture Unit that the present embodiment provides, including:
Open unit 401, be used for opening log recording function；
Receive unit 402, be used for receiving data recovery request；
Determine unit 403, during for determining first time point and second that described data recovery request is corresponding
Between point；Wherein, before described first time point is positioned at described second time point；
First acquiring unit 404, for obtaining the first number that data base is corresponding when described first time point
According to；
Second acquisition unit 405, for obtaining from described first time point to described second time point
The target journaling of record；
Recovery unit 406, is used for utilizing described first data, runs described target journaling, obtain data
The second data that storehouse is corresponding when described second time point.
In an embodiment of the invention, refer to Fig. 5, this Data Recapture Unit may further include:
Select unit 501, be used for selecting initial time point；
First backup units 502, for entering for the data that data base is corresponding when described initial time point
Row backup；
Described determine unit 403, during specifically for determining carry second according to described data recovery request
Between point, described initial time point is defined as described first time point.
In an embodiment of the invention, refer to Fig. 6, this Data Recapture Unit may further include:
Setup unit 601, is used for setting backup cycle；
Second backup units 602, in time often arriving described backup cycle, to number current in data base
According to backing up；
Described determine unit 403, during specifically for determining carry second according to described data recovery request
Between point, and determine time point corresponding when described second time point the last time backs up, should
Time point is as described first time point.
In an embodiment of the invention, refer to Fig. 7, this Data Recapture Unit may further include:
First dispensing unit 701, for the configuration file of configuration log writing function, described configuration file
Including: log recording mode, and, journal file store path, daily record synchronization, journal file maximum account for
At least one in consumption；
Described log recording mode includes: all operations in database of record performed data, record is held
Time point corresponding during each operation of row, and record the data performed after each operation.
In an embodiment of the invention, refer to Fig. 8, this Data Recapture Unit may further include:
Second dispensing unit 801, for the attribute information of configuration database；Described attribute information includes:
Access data base maximum connects duration, same time maximum number of connections, coded format, when accessing every time
Obtain at least one in the maximum quantity of character string.
In sum, the embodiment of the present invention at least can realize following beneficial effect:
1, in embodiments of the present invention, the behaviour by opening log recording function to record, data base performed
Make, and determine the first time point and the second time point that data recovery request is corresponding, by obtaining first
The first data that time point is corresponding, utilize between the first data run first time point to the second time point
Daily record, such that it is able to return to the second data that the second time point is corresponding accurately.
2, in embodiments of the present invention, corresponding by selecting initial time point to be defined as data recovery request
First time point, due to initial at database sharing, the data that this initial time point is corresponding take up room little,
And maintenance cost is low.
3, in embodiments of the present invention, by utilizing backup cycle to carry out standby to data current in data base
Part, when data are recovered by needs, can by backup the last for distance the second time point time
Between put as first time point, owing between this first time point and the second time point, time interval is less,
Database manipulation is recorded less, such that it is able to quickly the data in data base are recovered.
The contents such as the information between each unit in said apparatus is mutual, execution process, due to the present invention
Embodiment of the method is based on same design, and particular content can be found in the narration in the inventive method embodiment, this
Place repeats no more.
It should be noted that in this article, the relational terms of such as first and second etc be used merely to by
One entity or operation separate with another entity or operating space, and not necessarily require or imply this
Relation or the order of any this reality is there is between a little entities or operation.And, term " includes ",
" comprise " or its any other variant is intended to comprising of nonexcludability, so that include that one is
The process of row key element, method, article or equipment not only include those key elements, but also include the brightest
Other key elements really listed, or also include intrinsic for this process, method, article or equipment
Key element.In the case of there is no more restriction, statement " include a 〃 " and limit
Key element, it is not excluded that there is also another in including the process of described key element, method, article or equipment
Outer same factor.
One of ordinary skill in the art will appreciate that: realize all or part of step of said method embodiment
Can be completed by the hardware that programmed instruction is relevant, aforesaid program can be stored in embodied on computer readable
Storage medium in, this program upon execution, performs to include the step of said method embodiment；And it is aforementioned
Storage medium include: various Jie that can store program code such as ROM, RAM, magnetic disc or CD
In matter.
Last it should be understood that the foregoing is only presently preferred embodiments of the present invention, it is merely to illustrate this
The technical scheme of invention, is not intended to limit protection scope of the present invention.All spirit in the present invention and former
Any modification, equivalent substitution and improvement etc. done within then, are all contained in protection scope of the present invention.
Claims (10)
1. a data reconstruction method, it is characterised in that open log recording function in advance；Described method
Also include:
Receive data recovery request；
Determine first time point and the second time point that described data recovery request is corresponding；Wherein, described
Before one time point is positioned at described second time point；
Obtain the first data that data base is corresponding when described first time point；
Obtain the target journaling of record from described first time point to described second time point；
Utilize described first data, run described target journaling, obtain data base at described second time point
Time corresponding the second data.
Method the most according to claim 1, it is characterised in that
Farther include: select initial time point, and for data base's correspondence when described initial time point
Data back up；
The described first time point and the second time point determining that described data recovery request is corresponding, including: root
Determine the second time point carried according to described data recovery request, described initial time point is defined as described
First time point.
Method the most according to claim 1, it is characterised in that
Farther include: set backup cycle；
Farther include: when often arriving described backup cycle, data current in data base are backed up；
The described first time point and the second time point determining that described data recovery request is corresponding, including: root
Determine the second time point carried according to described data recovery request, and determine apart from described second time point
Time point corresponding when closely once backing up, using this time point as described first time point.
4. according to described method arbitrary in claim 1-3, it is characterised in that
Farther including: the configuration file of configuration log writing function, described configuration file includes: daily record
Recording mode, and, in journal file store path, daily record synchronization, journal file maximum occupancy extremely
Few one；
Described log recording mode includes: all operations in database of record performed data, record is held
Time point corresponding during each operation of row, and record the data performed after each operation.
5. according to described method arbitrary in claim 1-3, it is characterised in that farther include:
The attribute information of configuration database；Described attribute information includes: when accessing the maximum connection of data base
Obtain when time maximum number of connections long, same, coded format, every time access in the maximum quantity of character string
At least one.
6. a Data Recapture Unit, it is characterised in that including:
Open unit, be used for opening log recording function；
Receive unit, be used for receiving data recovery request；
Determine unit, for determining the first time point and the second time point that described data recovery request is corresponding；
Wherein, before described first time point is positioned at described second time point；
First acquiring unit, for obtaining the first data that data base is corresponding when described first time point；
Second acquisition unit, for obtaining record from described first time point to described second time point
Target journaling；
Recovery unit, is used for utilizing described first data, runs described target journaling, obtain data base and exist
The second data corresponding during described second time point.
Data Recapture Unit the most according to claim 6, it is characterised in that
Farther include: select unit, be used for selecting initial time point；
Farther include: the first backup units, for for data base's correspondence when described initial time point
Data back up；
Described determine unit, specifically for determining the second time point carried according to described data recovery request,
Described initial time point is defined as described first time point.
Data Recapture Unit the most according to claim 6, it is characterised in that
Farther include: setup unit, be used for setting backup cycle；
Farther include: the second backup units, in time often arriving described backup cycle, in data base
Current data back up；
Described determine unit, specifically for determining the second time point carried according to described data recovery request,
And determine time point corresponding when described second time point the last time backs up, by this time point
As described first time point.
9. according to described Data Recapture Unit arbitrary in claim 6-8, it is characterised in that
Farther include: the first dispensing unit, for the configuration file of configuration log writing function, described
Configuration file includes: log recording mode, and, journal file store path, daily record synchronization, daily record literary composition
At least one in part maximum occupancy；
Described log recording mode includes: all operations in database of record performed data, record is held
Time point corresponding during each operation of row, and record the data performed after each operation.
10. according to described Data Recapture Unit arbitrary in claim 6-8, it is characterised in that enter one
Step includes:
Second dispensing unit, for the attribute information of configuration database；Described attribute information includes: access
Obtain when the maximum connection duration of data base, same time maximum number of connections, coded format, every time access
At least one in the maximum quantity of character string.
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| CN201610269996.5A CN105955845A (en) | 2016-04-26 | 2016-04-26 | Data recovery method and device |
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| CN201610269996.5A CN105955845A (en) | 2016-04-26 | 2016-04-26 | Data recovery method and device |
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| CN106776120A (en) * | 2016-11-24 | 2017-05-31 | 珠海市魅族科技有限公司 | The method and device of data recovery |
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