JPH04320556A - Sampling system for transaction execution tracing information - Google Patents

Abstract

PURPOSE:To automatically sample the transaction execution tracing information of a transaction only when the transaction is abnormally ended. CONSTITUTION:When the transaction is abnormally ended, a transaction execution control means 5 starts up an abnormal end control means 8. The means 8 instructs the means 5 to start the sampling of tracing information and requests a transaction scheduling means 4 to schedule the transaction again by the same message. When the sampling of the tracing information is instructed at the time of reexecution of the transaction, the means 5 starts up a tracing information sampling means 9. The means 9 stores the tracing information in a tracing information storing file 10. Consequently the overhead of transaction processing due to the sampling of execution trace and the capacity of a tracing information storing file can be reduced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transaction execution trace information collection method.

0002

2. Description of the Related Art Conventionally, in a transaction processing system, when collecting execution trace information of a transaction, it is necessary to instruct the collection of trace information before executing the transaction.

0003

[Problems to be Solved by the Invention] When a transaction terminates abnormally, transaction execution trace information becomes effective material for investigating the cause.

[0004] Since it is difficult to specify when a transaction abnormally ends, even if only the trace information when a transaction ends abnormally is required, the conventional transaction execution trace information collection method described above does not instruct trace information collection. You can't collect it if you don't leave it. Therefore, trace information is always collected, which increases the overhead of transaction processing. Another problem was that the trace information storage file required a large amount of capacity.

[0005] The present invention was made to solve the above problem, and only when an abnormal transaction termination occurs,
The purpose of this invention is to obtain a transaction execution trace information collection method that can collect transaction execution trace information.

[0006]

[Means for Solving the Problems] The transaction execution trace information collection method of the present invention is a transaction processing method in which an application program is executed by inputting a message requesting transaction processing from a terminal device connected to a computer via a communication line. In a system, when information indicating the flow of execution of an application program is defined as transaction execution trace information, a message input from the terminal device is received and the message is stored in the transaction schedule queue for each task in the input message storage area. A message input means for registering, an input message storage area for storing the input message, a transaction schedule means for extracting one registered message from the transaction schedule queue and passing the message to the transaction execution control means, and the transaction schedule means. Activates the task that should process the message passed from , passes the message to the application program, controls the execution of the program, and if transaction execution trace information collection is instructed, activates the transaction execution trace information collection means and executes the application program. a transaction execution control means that activates a normal termination control means if the transaction terminates normally and activates an abnormal termination control means if the transaction terminates abnormally; normal termination control means for instructing the control means to request the transaction schedule means to schedule the next message already registered in the transaction schedule queue; and normal termination control means for instructing the transaction scheduler to schedule the next message registered in the transaction schedule queue; Abnormal termination control means that instructs the execution control means to request the transaction scheduling means to schedule the same message again; and transaction execution trace information collection that is activated by the transaction execution control means and collects transaction execution trace information into a trace information storage file. A trace information storage file for storing this transaction execution trace information, and a transaction execution trace information editing means for reading and editing transaction execution trace information from the trace information storage file.

[0007]

[Operation] According to the transaction execution trace information collection method of the present invention, the transaction execution control means controls the execution of the application program that processes the input message received from the transaction schedule means, and when the program terminates abnormally, the transaction execution control means terminates abnormally. The activated abnormal termination control means instructs the transaction execution control means to start collecting transaction execution trace information.The transaction execution trace information collection means is activated by the transaction execution control means and traces the transaction execution trace information. Since it is collected in the information storage file, transaction execution trace information can be collected when a transaction abnormally ends.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a transaction execution trace information collection system according to an embodiment of the present invention. This embodiment includes a terminal device 1 connected to the system via a communication line, a message input means 2 for registering input from the terminal device 1, a storage area 3 for storing input messages, and an input message storage area 3. a transaction scheduler 4 that retrieves stored messages and passes them to a transaction execution controller; a transaction execution controller 5 that processes messages from the transaction scheduler 4; and an application program 6 started by the transaction execution controller 5; A normal termination control means 7 which is started by the transaction execution control means 5 and performs normal processing; an abnormal termination control means 8 which also performs abnormal processing; and a transaction which is started by the transaction execution control means 5 and files execution tray information. It consists of an execution trace information collection means 9, a trace information storage file 10, and a transaction execution trace information editing means 11 for editing information stored in the trace information storage file 10.

FIG. 2 is a flowchart showing the processing in the transaction scheduling means 4 of the invention, FIG. 3 is a flowchart showing the processing in the normal termination control means 7 of the invention, and FIG. 4 is a flowchart showing the processing in the abnormal termination control means 8 of the invention. FIG.

Next, the operation of this embodiment will be explained in detail with reference to the drawings.

When a message requesting transaction processing is input from the terminal device 1, the message input means 2 receives the message, registers it in the transaction schedule queue for each task on the input message storage area 3, and sends the message to the transaction schedule means 2. Start 4.

[0013] The transaction scheduling means 4 includes:
One registered message is taken out from the transaction schedule queue and passed to the transaction execution control means 5.

The transaction execution control means 5 activates a task to process the message passed from the transaction schedule means 4, passes the message to the application program 6, and controls the execution of the program. If transaction execution trace information collection is instructed, the transaction execution trace information collection means 9 is activated.

Transaction execution trace information collecting means 9 writes transaction execution trace information into trace information storage file 10 .

Transaction execution trace information editing means 11 reads transaction execution trace information from trace information storage file 10 and edits it.

The transaction execution control means 5 activates the normal termination control means 7 when the application program 6 terminates normally, and activates the abnormal termination control means 8 when the application program 6 terminates abnormally. In step 71, the normal termination control means 7 requests the transaction execution control means 5 to stop collecting transaction execution trace information. In step 72, the transaction scheduling means 4 is requested to schedule the next transaction.

The abnormal termination control means 8 determines in step 81 whether the transaction is a re-execution transaction. If it is not a re-execution transaction, a request is made to the transaction execution control means 5 to start collecting transaction execution trace information in step 82. In step 83, the transaction scheduling means 4 is requested to schedule the same transaction again. If it is a re-execution transaction, a request is made to the transaction execution control means 5 to stop collecting transaction execution trace information in step 84. In step 85, the transaction scheduling means 4 is requested to schedule the next transaction.

The transaction scheduling means 4 comprises:
In step 41, it is determined whether the request is a re-execution request. If it is not a re-execution request, the next message is taken out from the transaction schedule queue and passed to the transaction execution control means 5 in step 42. If it is a re-execution request, the same message is passed to the transaction execution control means 5 again in step 43.

In this way, transaction execution trace information is automatically collected only when a transaction ends abnormally.

[0021]

As described above, in the present invention, when a transaction abnormally ends, the same transaction is automatically executed again by instructing the collection of transaction execution trace information.

[0022] Thereby, transaction execution trace information can be collected whenever an abnormal transaction termination occurs, even if transaction execution trace information collection is not instructed in advance.

[0023] Since transaction execution trace information is collected only when a transaction abnormally ends, the overhead of transaction processing can be reduced.

Furthermore, since it is not necessary to always instruct transaction execution trace information collection, there is an effect that the capacity of the trace information storage file can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a transaction execution trace information collection method that is an embodiment of the present invention;

[Figure 2
] A flowchart showing the processing in the transaction scheduling means 4 of the present invention,

FIG. 3 is a flowchart showing the processing in the normal termination control means 7 of the present invention;

FIG. 4 is a flowchart showing processing in the abnormal termination control means 8 of the present invention.

[Explanation of symbols]

1 Terminal device 2 Message input means 3 Input message storage area 4 Transaction schedule means 5
Transaction execution control means 6 Application program 7 Normal termination control means 8 Abnormal termination control means

Claims (1)

[Claims] Claim 1: In a transaction processing system that executes an application program by inputting a message requesting transaction processing from a terminal device connected to a computer via a communication line, information indicating the flow of execution of the application program is used to execute the transaction. Defined as trace information, message input means receives a message input from the terminal device and registers the message in a transaction schedule queue for each task on the input message storage area;
an input message storage area for storing the input message; a transaction scheduler that retrieves one registered message from the transaction schedule queue and delivers the message to a transaction execution control means; and a transaction scheduler that processes the message passed from the transaction scheduler. If the transaction execution trace information collection is instructed, start the transaction execution trace information collection means, and if the application program terminates normally. transaction execution control means that activates the normal termination control means and, if abnormal termination occurs, activates the abnormal termination control means; and transaction execution control means that is activated by the transaction execution control means and instructs the transaction execution control means to stop collecting transaction execution trace information. normal termination control means for requesting the transaction scheduling means to schedule the next message registered in the transaction schedule queue; and normal termination control means activated by the transaction execution control means to request the transaction execution control means to start collecting transaction execution trace information. an abnormal termination control means for instructing and requesting the transaction scheduling means to schedule the same message again; a transaction execution trace information collection means that is activated by the transaction execution control means and collects transaction execution trace information to a trace information storage file; A transaction execution trace information collection method comprising: a trace information storage file that stores this transaction execution trace information; and a transaction execution trace information editing means that reads and edits transaction execution trace information from the trace information storage file.