JPH03168846A - File transfer operation control system - Google Patents

Abstract

PURPOSE:To efficiently utilize a system resource by restricting the number of times of retrial and a processing time on the host side even when a user does not specify the control values of the number of times of retrial and processing time. CONSTITUTION:Independently of the specification of restriction values of the number of times of retrial 51 and processing time 52 included in a file transfer request 5 sent from a user, the restriction values of the number of times of maximum retrial 61 and maximum processing time 62 in the system are regulated also in a control table 6 in a file transfer server program 3 for controlling the whole execution of file transfer. Thereby, the operation control of an individual request from each file transfer user and the operation control of a system user can be simultaneously executed by determining the number of times of retrial and the processing time in accordance with the compared result of respective values. Thus, the system resource can be effectively utilized.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a file transfer operation management system, and more particularly to an operation management system for file transfer processing between a plurality of host computers.

Prior Art Conventionally, in this type of file transfer operation management system, all user-initiated file transfer execution programs were executed based on the user's specifications. Therefore, it was not possible to perform operational management of the entire host computer system.

In other words, when a user wants to transfer a file, he or she creates a file transfer request and starts the file transfer execution program, but at this time, if the retry limit or processing time limit is specified in the file transfer request, If there is, the file transfer execution program performs processing according to the limit value. However, if a limit value is not specified in the file transfer request, the file transfer process is tried an infinite number of times or executed for a long time until it ends normally or abnormally ends with no possibility of re-execution.

In other words, in the conventional file transfer operation management method described above, operation management entirely depends on the user's requests. Therefore, if a user requests a large amount of file transfer without specifying a limit value, and if the file transfer cannot be processed normally due to a communication line failure, all file transfers will be completed normally. I had re-executed until then. Therefore, in operation on the host computer, there is a drawback that other jobs may not be executed depending on the system's limit on the number of concurrently executing jobs.

OBJECTS OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and its purpose is to provide a file transfer operation management method that can efficiently utilize system resources.

Composition of the Invention The file transfer operation management method according to the present invention provides a user retry count that specifies the maximum number of times the user desires to re-execute file transfers, and a user that specifies the execution time limit for the file transfer process that the user desires. A file transfer operation management method when a user transfers files according to the processing time, the maximum number of retries stipulating the maximum number of re-execution times of file transfer, and the maximum retry time stipulating the execution time limit for file transfer processing. A processing time is determined in advance, and when executing a file transfer, the smaller of the user retry count and the maximum retry count is set as the maximum number of file transfer re-executions, and the user processing time and the maximum retry count are determined in advance. The present invention is characterized in that the file transfer is performed by setting the execution time limit of the file transfer process to the smaller value of the processing time.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the structure of an embodiment of a file transfer system employing a file transfer operation management method according to the present invention. In the figure, the file transfer system employing the method of this embodiment includes a host computer 1 connected to another host computer (not shown) via a communication line 2. And this host computer 1
Above, the file transfer server program 3 is started, and the control table 6 on the file transfer server program 3 contains the maximum number of retries 61 and the maximum number of retries for one file transfer request in this file transfer system. A processing time 62 is defined.

A file transfer user starts a file transfer execution program 4 when transferring a file. Furthermore, the user specifies the number of retries and processing time using keystrokes, etc., and passes the user file transfer request 5. Then, the file transfer execution program 4 uses the file transfer execution determination means 7 to
The number of retries 51 and processing time 52 in the user file transfer request 5 are compared with the maximum number of retries 61 and maximum processing time 62 in the control table 6 of the file transfer server program 3. Then, it is determined whether or not the file transfer can be executed according to a procedure described later, and if the file transfer can be executed, a request is made to the file transfer execution means 8 to execute the file transfer.

When the file transfer execution means 8 receives a request from the file transfer execution f determining means 7, it starts executing the file transfer and transmits the execution result to the file transfer determination means 7.

Next, the transfer processing procedure of this system will be explained.

FIG. 2 is a flowchart showing the outline of the processing by the file transfer execution determining means 7 in this system.

First, the time at the start of processing is determined (step A). Next, the smaller of the value of the number of retries 51 in the user file transfer request 5 and the value of the maximum number of retries 61 in the control table 6 of the file transfer server program 3 is determined as a retry counter (step B ). Similarly, the processing time 52 during the user file transfer request 5
The smaller value of the specified value and the specified value of the maximum processing time 62 in the control table 6 of the file transfer server program 3 is determined as the remaining time for processing (Step C)
.

Then, it is determined whether the above-mentioned retry counter is 0 or not (step D). If the retry counter is O, the state is set such that retry is not possible (step E).

Subsequently, the file transfer execution means 8 is requested to execute the file transfer (step F). As a result, file transfer processing is executed. As a result of the transfer process, if the return value from the file transfer execution means 8 indicates normal completion, the process ends with a normal result (steps GH). On the other hand, if the return value is not normal termination, it is determined whether the attempt is not possible (
In step H), if retry is not possible, the process is terminated as an abnormal result (step H→Q).

At other times, that is, when a retry is possible, the process is not re-executed immediately, but rather waits for a while (step ■).

This is because the cause of abnormal termination, which can normally be retried, is that the file to be transferred is being used by another job or there is a communication failure with the other host computer, so a wait is performed.

After the process wait is completed, the retry counter is decremented by 1 (step J), the current time is set as the end time (step K), and the previously determined time at the start of the process is subtracted from the end time. A value is determined as the elapsed time (step L).

Then, subtract this elapsed time from the remaining time mentioned above (.
Step M), if the value becomes 0 or less, the process ends as a result abnormality (Step NR).

If it is still greater than 0, the previous end time is reset as the process start time in order to perform re-execution (step N).
-0), check whether the retry counter is 0 again (
Perform from step O→D).

Thereafter, step D-0 will be repeated.

In this way, by using the file transfer operation management method according to the present invention, even if the user does not specify the limit values for the number of retries and processing time, the host side sets the limits, so system resources can be used efficiently. be.

Effects of the Invention As explained above, the present invention provides a system for managing the entire execution of file transfers in a file transfer server program, in addition to specifying the limit values for the number of retries and processing time during a file transfer request from a user. By specifying the maximum number of retries and processing time limits within the system in the control table, and determining the number of retries and processing time according to the results of these comparisons, individual file transfer users can This allows the operational management of requests and the operational management by system users to be performed at the same time, which has the effect of making it possible to effectively utilize system resources.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the structure of an embodiment of a file transfer system employing the file transfer operation management method according to the present invention, and FIG. 2 is a flow chart showing the procedure of file transfer processing in this system. Explanation of symbols of main parts 5... User file transfer request 6 6 6... Control table 7... File transfer execution determination means 8...
・File transfer execution means 1...Maximum number of retries 2...Maximum processing time

Claims (1)

[Claims] (1) The user can retry files according to the user retry count, which specifies the maximum number of file transfer re-executions desired by the user, and the user processing time, which specifies the execution time limit for file transfer processing desired by the user. This is a file transfer operation management method for transferring files, in which a maximum number of retries specifying the maximum number of re-executions of file transfers and a maximum processing time specifying a time limit for executing file transfer processing are determined in advance. When executing a transfer, the smaller of the user retry count and the maximum retry count is the maximum number of file transfer re-executions, and the smaller of the user processing time and the maximum processing time A file transfer operation management method characterized in that a file transfer is performed with a time limit for executing file transfer processing.