Mechanisms for adaptively entering and exiting recovery mode. When a message is received from a particular message transaction, the appropriate processing instance is loaded from persistent memory to system memory. The processing instance then determines from its own state information whether or not it is in recovery mode. This indication of recovery or normal mode may be set by a system-wide recovery detection module. If the processing instance determines that it is in normal mode, then the pro...

Diagnostic information is produced from a computer memory operably connected to a DBMS. A command is received from a user wherein the command comprises an identifier of a resource associated with the DBMS. The identifier is utilized to determine one or more control blocks residing within the computer memory and wherein the one or more control blocks are related to the resource. The memory locations occupied by the one or more control blocks are determined and the contents of the memory locations...

An embodiment of a method of seeking consensus among computer processes begins with a first step of saving a new timestamp in a timestamp array for a particular process. The method continues with a second step of determining whether a most recent entry in a decision array includes a previously established consensus decision. In a third step, if the most recent entry does not include the previously established consensus decision, the method saves a proposed decision as a consensus decision. Other...

A method for monitoring a data processing system is proposed. The method involves the measuring of state parameters of the system. Indicators of the performance of the system are then inferred from the state parameters by applying fuzzy-logic rules. The proposed solution is based on the idea of estimating a trust value, based on the effectiveness of the corrective actions. If the previous corrective actions prove to be effective than the trust value is enhanced and the system is allowed a higher...

A common design framework for input and output signal validation, arbitration, and fault reporting for real-time controllers includes a method of validating redundant input and output signals and arbitrating between the redundant input and output signals by determining a fault severity level for each of the redundant input and output signals, and determining a signal to transmit for further processing based at least in part on the determined fault severity levels.

In a data center, when a server is disconnected from the Internet because of illegal manipulation of a file, valid files (not manipulated) are copied to a standby server and the processing is resumed after a short period of disconnection. According to the invention, a control program P10 performs manipulation checks for all files listed in a manipulation checklist. If any of them is manipulated, it issues a request to disconnect from the external network and a request to assign a standby server ...

An aspect based recovery system and method is provided. The state of a device may be defined by one or more aspects of the device. Aspects may include graphical user interface, database, security, user configuration, site configuration, and current user. Using this aspect-based definition, the current state of the device may be monitored. For example, the current state of the system may be determined by examining the aspects which define the state. Moreover, using this aspect-based definition, t...

A method for monitoring the execution of a sequence of instruction codes in an integrated circuit comprising a central processing unit provided for executing such instruction codes. In one embodiment, the method comprises producing current cumulative signatures during the execution of a sequence, until a final cumulative signature is obtained, producing an error signal having a value active by default while the current cumulative signature is different to an expected signature, measuring a prede...

Mechanisms for adaptively entering and exiting recovery mode. When a message is received from a particular message transaction, the appropriate processing instance is loaded from persistent memory to system memory. The processing instance then determines from its own state information whether or not it is in recovery mode. This indication of recovery or normal mode may be set by a system-wide recovery detection module. If the processing instance determines that it is in normal mode, then the pro...

An apparatus, system, and method are disclosed for recovering multivolume data. In one embodiment, a backup module physically backs up a plurality of source volumes to plurality of backup volumes. A data set size module may also capture a data set size for a data set during the physical backup. A retrieval module retrieves metadata for the data set from a catalog. A location module locates the data set on the plurality of backup volumes using the metadata. A recovery module recovers the data set...