Abstract: A securities trading apparatus includes a memory; and a processor coupled to the memory, the processor configured to: extract transactions from trading transactions stored in the memory, the extracted transactions being one of order transactions or insert transactions, each of the order transactions being a buy order transaction or a sell order transaction; and generate a single trading transaction from the extracted transactions.

Abstract: A memory stores therein, with respect to a database containing records each having a first data item and a second data item, an index that includes, in association with each candidate value that is used as the first data item, record specification information specifying two or more records with the candidate value and a statistical value obtained from values of the second data item registered in the two or more records. A processor receives a query including a search condition specifying a requested value of the first data item and a command requesting statistical processing of values of the second data item registered in records satisfying the search condition, retrieves the statistical value associated with a candidate value satisfying the search condition from the index, and outputs a processing result based on the retrieved statistical value for the query.

Abstract: Free spaces of a plurality of databases including the same data are monitored. The free spaces depend on fragmentation states of the respective databases. A first database is determined to be an active database, and a second database whose free space is larger than that of the first database is determined to be a standby database. Data relocation processing is performed on the second database, the data relocation processing including suspending data synchronization, initializing the standby database, copying data of the active database to the standby database, and resuming the data synchronization. Controlling is performed so that the data relocation processing is performed on a database other than the second database by changing the active database and the standby database.

Abstract: Free spaces of a plurality of databases including the same data are monitored. The free spaces depend on fragmentation states of the respective databases. A first database is determined to be an active database, and a second database whose free space is larger than that of the first database is determined to be a standby database. Data relocation processing is performed on the second database, the data relocation processing including suspending data synchronization, initializing the standby database, copying data of the active database to the standby database, and resuming the data synchronization. Controlling is performed so that the data relocation processing is performed on a database other than the second database by changing the active database and the standby database.

Abstract: A memory stores therein, with respect to a database containing records each having a first data item and a second data item, an index that includes, in association with each candidate value that is used as the first data item, record specification information specifying two or more records with the candidate value and a statistical value obtained from values of the second data item registered in the two or more records. A processor receives a query including a search condition specifying a requested value of the first data item and a command requesting statistical processing of values of the second data item registered in records satisfying the search condition, retrieves the statistical value associated with a candidate value satisfying the search condition from the index, and outputs a processing result based on the retrieved statistical value for the query.

Abstract: A securities trading apparatus includes a memory; and a processor coupled to the memory, the processor configured to: extract transactions from trading transactions stored in the memory, the extracted transactions being one of order transactions or insert transactions, each of the order transactions being a buy order transaction or a sell order transaction; and generate a single trading transaction from the extracted transactions.

Abstract: An information processing apparatus accepts migration of data from a migration source information processing apparatus. The information processing apparatus includes a processor to execute an operation for operation target data as a target of a processing request given from a client apparatus when the operation target data is migrated from the migration source information processing apparatus and the processing request is received from the migration source information processing apparatus, and to notify the client apparatus of a processing result of the operation, the result containing arrangement information of the operation target data.

Abstract: A communication control method includes: comparing the number of messages to be transmitted which are stored in a buffer with the number of communication processings in execution, each of the communication processings being to execute processing to transmit the messages stored in the buffer; and determining, by a processor, whether integration processing is performed on a newly generated first message to be transmitted based on a result of the comparing, the integration processing being processing that integrates the first message and a message which is in the buffer and of which the destination as a destination of the first message is specified.

Abstract: An information processing method includes executing a processing corresponding to a first request of a terminal apparatus using a first information processing apparatus, when a fault occurs in the first information processing apparatus, transmitting an apparatus information that identifies the first information processing apparatus from a second information processing apparatus to the terminal apparatus, after receiving the apparatus information by the terminal apparatus, discarding data transmitted from the first information processing apparatus to the terminal apparatus, transmitting, from the terminal apparatus to the second information processing apparatus, a response notification indicating that the apparatus information is received by the terminal apparatus, and after receiving the response notification by the second information processing apparatus, executing the processing corresponding to a second request of the terminal apparatus using the second information processing apparatus.

Abstract: A storage unit stores update data corresponding to transactions being executed and indicating updating processes yet to be reflected in a database. A control unit generates a list indicating transactions. When apparatuses executing transactions are switched from an information processing apparatus to another information processing apparatus, the control unit transmits the list to the other information processing apparatus, and migrates the update data to the other information processing apparatus based on the list.

Abstract: An information processing apparatus accepts migration of data from a migration source information processing apparatus. The information processing apparatus includes a processor to execute an operation for operation target data as a target of a processing request given from a client apparatus when the operation target data is migrated from the migration source information processing apparatus and the processing request is received from the migration source information processing apparatus, and to notify the client apparatus of a processing result of the operation, the result containing arrangement information of the operation target data.

Abstract: An information processing method includes executing a processing corresponding to a first request of a terminal apparatus using a first information processing apparatus, when a fault occurs in the first information processing apparatus, transmitting an apparatus information that identifies the first information processing apparatus from a second information processing apparatus to the terminal apparatus, after receiving the apparatus information by the terminal apparatus, discarding data transmitted from the first information processing apparatus to the terminal apparatus, transmitting, from the terminal apparatus to the second information processing apparatus, a response notification indicating that the apparatus information is received by the terminal apparatus, and after receiving the response notification by the second information processing apparatus, executing the processing corresponding to a second request of the terminal apparatus using the second information processing apparatus.

Abstract: An information processing method includes executing a processing corresponding to a first request of a terminal apparatus using a first information processing apparatus, when a fault occurs in the first information processing apparatus, transmitting an apparatus information that identifies the first information processing apparatus from a second information processing apparatus to the terminal apparatus, after receiving the apparatus information by the terminal apparatus, discarding data transmitted from the first information processing apparatus to the terminal apparatus, transmitting, from the terminal apparatus to the second information processing apparatus, a response notification indicating that the apparatus information is received by the terminal apparatus, and after receiving the response notification by the second information processing apparatus, executing the processing corresponding to a second request of the terminal apparatus using the second information processing apparatus.

Abstract: A communication control method includes: comparing the number of messages to be transmitted which are stored in a buffer with the number of communication processings in execution, each of the communication processings being to execute processing to transmit the messages stored in the buffer; and determining, by a processor, whether integration processing is performed on a newly generated first message to be transmitted based on a result of the comparing, the integration processing being processing that integrates the first message and a message which is in the buffer and of which the destination as a destination of the first message is specified.

Abstract: A storage unit stores update data corresponding to transactions being executed and indicating updating processes yet to be reflected in a database. A control unit generates a list indicating transactions. When apparatuses executing transactions are switched from an information processing apparatus to another information processing apparatus, the control unit transmits the list to the other information processing apparatus, and migrates the update data to the other information processing apparatus based on the list.

Abstract: An information processing method includes executing a processing corresponding to a first request of a terminal apparatus using a first information processing apparatus, when a fault occurs in the first information processing apparatus, transmitting an apparatus information that identifies the first information processing apparatus from a second information processing apparatus to the terminal apparatus, after receiving the apparatus information by the terminal apparatus, discarding data transmitted from the first information processing apparatus to the terminal apparatus, transmitting, from the terminal apparatus to the second information processing apparatus, a response notification indicating that the apparatus information is received by the terminal apparatus, and after receiving the response notification by the second information processing apparatus, executing the processing corresponding to a second request of the terminal apparatus using the second information processing apparatus.

Abstract: According to an aspect of the embodiment, a message queuing unit of the message processing apparatus stores received messages. A message reception control unit receives a notification of destinations of messages, extracts only the messages for current processes based on a process control table recording current or standby of processes, and transmits the messages to corresponding applications as current processes. On the other hand, the message reception control unit does not transmit the messages to the applications as standby processes.

Abstract: An image formation apparatus includes: an acquisition unit that reads an original and acquires image data; a plurality of accommodation units that accommodate therein printing media on which images are to be formed; and an accommodated-printing-medium setting unit that sets an accommodated-printing-medium size which is a size of the printing medium accommodated in each of the accommodation unit, and an accommodated-printing-medium sort which is a sort of the printing medium.

Abstract: According to an aspect of the embodiment, a message queuing unit of the message processing apparatus stores received messages. A message reception control unit receives a notification of destinations of messages, extracts only the messages for current processes based on a process control table recording current or standby of processes, and transmits the messages to corresponding applications as current processes. On the other hand, the message reception control unit does not transmit the messages to the applications as standby processes.

Abstract: When a message is transmitted from a storing application of a process requesting server, a message queuing server stores the message in a queue. When storing the message in the queue, the message queuing server transmits information regarding this message to an extracting application of a process performing server, thereby controlling a linkage operation between the storing application of the process requesting server and the extracting application of the process performing server.