摘要:
A graphical user interface based method of configuring automatic failover from a primary database system to a standby database system that is coupled to the primary database system by a network. Also coupled to the network is an observer process that is independent of the database systems and that initiates the failover process. The observer periodically pings the database systems to determine whether a failover is necessary. The graphical user interface permits a user to specify the primary and secondary database systems, configure the observer, and specify conditions under which a failover may occur and to enable automatic failover. A failover context is created from the inputs to the GUI and stored in persistent storage belonging to the database systems. If the Observer's context is stale, the Observer fetches the database system's context.
摘要:
Battery power consumption and data transfer latency of an electro-optical reader in a wireless network are minimized by turning a radio off in a default state, and by turning the radio on only after the reader has generated data to be transferred along the network.
摘要:
Some computer operating systems do not permit application programs to perform certain tasks. If there is a desire to perform a forbidden task, a virtual partition (228) is created (610) in a storage device (108), such as a hard disk drive, associated with the computer system (100). The virtual partition (228) is stored as a file within the file system of the storage device (108). Operating system files (414) are installed in the virtual partition (228), and the storage device (108) is configured (616) to boot the computer system (100) using the operating system in the virtual partition. When the task is complete, the computer system (100) is configured to boot using the operating system other than the one in the virtual partition.
摘要:
A signaling arrangement and method for use in a wireless local area network managed by a system manager include a reader for electro-optically reading bar code symbols. The system manager verifies that a symbol has been successfully read and sends an acknowledgment signal by wireless, radio frequency transmission to a remote indicator operative for generating an alert signal noticeable to a user.
摘要:
The present invention provides processes for deconstructing biomass to produce aqueous and organic products using a solvent produced in a bioreforming reaction.
摘要:
A method of implementing a product and/or service promotion membership program, comprising the steps of: enrolling at least one business to participate in the membership program; obtaining personal information from a consumer; contacting the consumer to: obtain confirmation that the consumer desires to participate in the membership program; and obtain information about the consumer's interest in products or services provided by the participating business; and periodically providing information to the consumer concerning a promotion available to the consumer at the participating business.
摘要:
A device may include a battery and a plurality of components receiving power from the battery. A voltage of the battery is maintained above a threshold voltage by decreasing a current drawn by one of the components when the battery voltage approaches the threshold voltage.
摘要:
A dual-mode RFID reader is capable of automatically switching from a far-field interrogation mode to a near-field interrogation mode upon the detection of certain operating or handling conditions. The RFID reader includes an RFID radio module configured to support a far-field interrogation mode and a near-field interrogation mode, an antenna arrangement coupled to the RFID radio module, and a mode-switch sensor architecture coupled to the RFID radio module. The mode-switch sensor architecture is configured to detect conditions indicative of near-field interrogation, and the RFID radio module automatically configures itself for operation in the near-field interrogation mode upon detection of such conditions.
摘要:
A device may include a battery and a plurality of components receiving power from the battery. A voltage of the battery is maintained above a threshold voltage by decreasing a current drawn by one of the components when the battery voltage approaches the threshold voltage.
摘要:
A graphical user interface based method of configuring automatic failover from a primary database system to a standby database system that is coupled to the primary database system by a network. Also coupled to the network is an observer process that is independent of the database systems and that initiates the failover process. The observer periodically pings the database systems to determine whether a failover is necessary. The graphical user interface permits a user to specify the primary and secondary database systems, configure the observer, and specify conditions under which a failover may occur and to enable automatic failover. A failover context is created from the inputs to the GUI and stored in persistent storage belonging to the database systems. If the Observer's context is stale, the Observer fetches the database system's context.