Patent application number | Description | Published |
20080288946 | States matrix for workload management simplification - A computer-implemented method, system and article of manufacture for managing workloads in a computer system, comprising monitoring system conditions and operating environment events that impact on the operation of the computer system, using an n-dimensional state matrix to identify at least one state resulting from the monitored system conditions and operating environment events, and initiating an action in response to the identified state. | 11-20-2008 |
20080306950 | Arrival rate throttles for workload management - A computer-implemented method, system and article of manufacture for managing workloads in a computer system, comprising monitoring system conditions and operating environment events that impact on the operation of the computer system, regulating execution of one or more queries based on the monitored system conditions and operating environment events using arrival rate throttles, and performing the queries to access data in a database for presentation and use to a user. | 12-11-2008 |
20090049024 | Dynamic query optimization between systems based on system conditions - A computer-implemented system, method and article of manufacture for managing a plurality of database systems in a domain, wherein each of the database systems are managed by one or more closed-loop system management (CLSM) regulators. A virtual regulator manages the domain, wherein the virtual regulator communicates with the CLSM regulators to monitor the database systems' system conditions and operating environment events within the domain and to provide for dynamic query optimization between the database systems within in the domain based on the system conditions and operating environment events. | 02-19-2009 |
20090132471 | Dynamic query and step routing between systems tuned for different objectives - A computer-implemented apparatus, method, and article of manufacture manage a plurality of database systems. A domain includes a plurality of database systems. Each of the database systems is tuned for a particular type of workload. A virtual regulator (or multiple virtual regulators running in parallel) manages the domain and routes a set of one or more queries to a particular database system within the domain based on a cost function for each database system. | 05-21-2009 |
20100125565 | Actively managing resource bottlenecks in a database system - A computer-implemented method, apparatus and article of manufacture for optimizing a database query. Resource usage of one or more resources of the computer system are monitored. A condition code representative of the monitored resource usage is stored. A cost model is modified using the stored condition code. A query execution plan is generated for the database query using the modified cost model. The query execution plan is then executed in order to retrieve data from a database stored on the computer system, wherein the retrieved data is presented to a user for subsequent use and analysis. | 05-20-2010 |
20100145929 | ACCURATE AND TIMELY ENFORCEMENT OF SYSTEM RESOURCE ALLOCATION RULES - A computer-implemented method, apparatus and article of manufacture for optimizing a database query. A query execution plan for the database query is generated using estimated cost information; one or more steps of the query execution plan are executed to retrieve data from a database stored on the computer system. Actual cost information is generated for each of the executed steps, and the estimated cost information is re-calculated using the actual cost information. One or more resource allocation rules defined on one or more steps of the query execution plan are executed, based on the estimated cost information, wherein the resource allocation rules include one or more defined actions. The estimated cost information may be re-calculated using the actual cost information when confidence in the estimated cost information is low, but the estimated cost information may not be re-calculated when confidence in the estimated cost information is high. In addition, the estimated cost information may be re-calculated using the actual cost information, only when the step has one or more resource allocation rules defined thereon. | 06-10-2010 |
20100169377 | SYSTEM, METHOD, AND COMPUTER-READABLE MEDIUM FOR FACILITATING APPLICATION VIRTUAL DATABASE USERS - A system, method, and computer-readable medium that provide virtual user access to a database system are provided. Middle-tier application end users issue requests to a middle-tier application that submits the requests to a database system on behalf of the middle-tier end users. The middle-tier application may authenticate end users and maintain a session pool for maintaining sessions with the database system for virtual users comprising valid middle-tier application end users. The middle-tier application is able to assert the identity of virtual users corresponding to the end users for use in access rights checking and auditing of queries without establishing a new logon session for the user. To facilitate middle-tier application assertion of virtual user identities, the middle-tier application is registered as a valid database user with the database system. | 07-01-2010 |
20120059817 | METHOD FOR INCREASING THE EFFICIENCY OF SYNCHRONIZED SCANS THROUGH INTELLIGENT QUERY DISPATCHING - A computer-implemented method, apparatus and article of manufacture for optimizing execution of database queries in a computer system. In one embodiment, the steps and functions include: generating first and second query execution plans for first and second requests, wherein the first and second query execution plans are each comprised of one or more steps that scan a specified table in a database stored on the computer system in order to retrieve data from the table; and executing the first and second query execution plans, wherein intelligent query dispatching is performed on the steps of the first and second query execution plans to ensure that the steps share the data retrieved from the table and cached in memory. | 03-08-2012 |
20120144234 | AUTOMATIC ERROR RECOVERY MECHANISM FOR A DATABASE SYSTEM - A computer-implemented method, apparatus and article of manufacture for performing an automatic error recovery in a database system. Automatic error recovery is performed for a query execution plan, following errors, problems or failures that occur during execution, by automatically or manually deactivating and/or activating components, features or code paths, and then re-submitting the query execution plan for execution in the computer system. | 06-07-2012 |
20130085984 | MANAGING EXCESS CAPACITY OF DATABASE SYSTEMS IN A CAPACITY CONTROLLED COMPUTING ENVIRONMENT - Excess capacity available to a database system in a capacity controlled environment can be effectively managed. In particular, excess capacity that is not made available for normal operations of a database system can be used to manage errors, especially situations that may hinder expected performance of the database system. In addition, excess capacity can be used to optimize or further optimize database queries, especially those that meet a criterion (e.g., not fully optimize, not optimized as expected). | 04-04-2013 |
20130085986 | SYSTEM MAINTENANCE AND TUNING OF DATABASES BY USING EXCESS CAPACITY IN CAPACITY CONTROLLED ENVIRONMENT - Excess capacity available to a database system in a capacity controlled environment can be effectively managed for maintenance and/or tuning activities. In this context, excess capacity can be used as needed and/or on a temporary basis. Furthermore, maintenance and/or tuning activities can be performed without requiring the use of the configured or allotted capacity. As a result, these operations can be performed without adversely affecting other operations which may be deemed more critical by the users of databases. System maintenance and tuning (or fine tuning) of a database environment can, for example, include operations associated with “Physical Tuning,” and “Index Tuning”. Some exemplary operations include collecting Statistics, analyzing a database workload, sampling, analyzing an execution plan, creating indexes. | 04-04-2013 |
20130086129 | REGULATING CAPACITY AND MANAGING SERVICES OF COMPUTING ENVIRONMENTS AND SYSTEMS THAT INCLUDE A DATABASE - Capacity of a database system and/or a computing system that includes a database can be effectively changed from a current computing capacity to another computing capacity. This can be achieved by causing usage capacity of at least one of resource to be changed when the database is active. By way of example, capacity of a database system can be regulated by delaying the execution of the database work based on a target capacity. As a result, database work can take relatively longer to complete when the capacity of a database is effectively regulated to be below its full capacity. In effect, a portion of available capacity (excess capacity) can be made inaccessible to the database. However, excess capacity can be used to manage various services of the database in accordance with one or more service criteria (e.g., Service Level Goals or Agreements). | 04-04-2013 |
20130086374 | FINE-GRAINED CAPACITY MANAGEMENT OF COMPUTING ENVIRONMENTS THAT MAY SUPPORT A DATABASE - Computing capacity of a computing environment can be managed by controlling it associated processing capacity based on a target (or desired) capacity. In addition, fine-grained control over the processing capacity can be exercised. For example, a computing system can change the processing capacity (e.g., processing rate) of at least one processor operating based on a target capacity. The computing system may also be operable to change the processing capacity based on a measured processing capacity (e.g., a measured average of various processing rates of a processor taken over a period of time when a processor may have been operating at different processing rates over that period). By way of example, the processing rate of a processor can be switched between 1/8 and 2/8 of a maximum processing rate to achieve virtually any effective processing rates between them. | 04-04-2013 |
20130086590 | MANAGING CAPACITY OF COMPUTING ENVIRONMENTS AND SYSTEMS THAT INCLUDE A DATABASE - Capacity of a computing environment that includes a database can be maintained at a target capacity by regulating the usage of one or more of the resources by one or more tasks or activities (e.g., database work). Moreover, the usage of the resource(s) can be regulated based on the extent of use of the resource(s) by one or more other activities not being regulated (e.g., non-database activities that cannot be regulated by a database system). In other words, a target capacity can be maintained by effectively adjusting the extent by which one or more tasks can access one more resources in consideration of the extent by which one or more of the resources are used by one or more other tasks or activities that are not being regulated with respect to their access of the resource(s). | 04-04-2013 |
20130173586 | SYSTEM, METHOD, AND COMPUTER-READABLE MEDIUM FOR REDUCING RESPONSE TIME VARIATION IN A WORKLOAD MANAGEMENT SYSTEM - A system, method, and computer readable medium are provided for reducing response time variation in a workload management system for a database system. When a query response is generated in response to a database query from a client, a determination may be made as to whether response time of the query response is less than a predetermined amount of time. Delivery of the query response to the client is delayed when an amount of time associated with the query response is less than the predetermined amount of time. | 07-04-2013 |
20130212086 | ACTIVELY MANAGING RESOURCE BOTTLENECKS IN A DATABASE SYSTEM - A computer-implemented method, apparatus and article of manufacture for optimizing a database query. Resource usage of one or more resources of the computer system are monitored. A condition code representative of the monitored resource usage is stored. A cost model is modified using the stored condition code. A query execution plan is generated for the database query using the modified cost model. The query execution plan is then executed in order to retrieve data from a database stored on the computer system, wherein the retrieved data is presented to a user for subsequent use and analysis. | 08-15-2013 |
20130254210 | INDEX SELECTION IN A MULTI-SYSTEM DATABASE MANAGEMENT SYSTEM - A system includes a multi-system database management system having a plurality of database systems. An index selection subsystem combines sets of query information from respective ones of the plurality of database systems into a workload. The index selection subsystem then generates candidate indexes from the workload, and selects recommended indexes from the candidate indexes based on one or more criteria. | 09-26-2013 |
20140108001 | EMULATING AN ENVIRONMENT OF A TARGET DATABASE SYSTEM - A test system receives environment information of a target database system, where the environment information includes information relating to hardware and software components of the target database system, and one or more of: definitions of workloads in the target database system, and settings of a scheduler in the target database system. The test system emulates an environment of the target database system using the received environment information, and database software is executed in the emulated environment in the test system. | 04-17-2014 |
20140188884 | DESIGNATED COMPUTING GROUPS OR POOLS OF RESOURCES FOR STORING AND PROCESSING DATA BASED ON ITS CHARACTERISTICS - Data or one or more operations can be provided, based on one or more characteristics associated with the data and/or operations, to a designated computing group or pool of computing resources designated for handling the data and/or operations with the particular data characteristic(s). The designated computing group can, for example, be one of multiple computing groups in the same system or device. As such, all of the computing groups can still function together in the same system or device, for example, in parallel. However, each one of the multiple computing groups can, for example, be defined or predefined to include one or more computing resources that are more suitable for storing and/or processing data with one or more data characteristics or handle operations with one or more determined characteristics. | 07-03-2014 |
20140280333 | MANAGEMENT OF DIFFERENT DATABASE SYSTEMS AND/OR ENVIRONMENTS - A database request can be processed at least partly based on one or more differences between multiple database systems and/or environments. The differences can, for example, include differences between one or more database capabilities respectively provided by the multiple database systems, differences between the representation of data in the multiple database systems, and differences in the interfaces for accessing the multiple database systems. | 09-18-2014 |