摘要:
Compounds of formula (I) and their pharmaceutically acceptable salts are described: formula (I). Processes for their preparation, pharmaceutical compositions containing them, their use as medicaments and their use in the treatment of bacterial infections are also described.
摘要:
Compounds of the formula (I), or a pharmaceutically-acceptable salt, or an in-vivo-hydrolysable ester thereof, wherein —N-HET is, for example, (Ic) or (If) wherein R1 is, for example, halogen or a (1–4C)alkyl group which is substituted by one substituent selected from, for example, hydroxy, (1–4C)alkoxy, amino, cyano or azido; Q is selected from, for example, Q1 wherein R2 and R3 are independently hydrogen or fluoro; T is selected from a range of groups, for example, wherein m is 0, 1 or 2; are useful as antibacterial agents; and processes for their manufacture and pharmaceutical compositions containing them are described.
摘要:
A distributed database system providing data and space management methodology. In one embodiment a system for allocating resources amongst a plurality of database servers sharing resources comprises: an input module for receiving user input for allocating resources shared amongst a plurality of database servers and establishing thresholds for utilization of resources at each database server; a monitoring module at each database server for monitoring local resource utilization at each database server and sending a request for balancing resources to a second database server when local resource utilization reaches an established threshold at a first database server; and a load balancing module for receiving the request for balancing resources and determining whether to adjust resources allocated to the first database server and the second database server in response to the request.
摘要:
The present invention relates to compounds of Formula (I); to pharmaceutically acceptable salts thereof, to methods of using them to treat bacterial infections, and to methods for their preparation.
摘要:
A docking device for restoring location arrangement of output devices is provided according to an aspect of the present invention. The docking device includes a transmission module configured to obtain output information from an information generation module and transmit it to an output device and an identifier storage module configured to store an identifier corresponding to the output device. An output system and method for restoring a location arrangement of output devices are also provided.
摘要:
A system, method, and computer program product for improving physical lock acquisition for database transaction logs are described herein. In an embodiment, the method operates by receiving a request for a transaction log page and determining whether a requested log page is newly-allocated or already exists. A determination is made regarding whether the last log page is being modified. A physical lock is taken on the requested log page when it has been determined that the requested log page is not newly-allocated and that the last log page is not being modified. Operations on the last log page are synchronized without a physical lock when it is determined that the requested log page is newly-allocated or that the last log page is being modified.
摘要:
A docking device for restoring location arrangement of output devices is provided according to an aspect of the present invention. The docking device includes a transmission module configured to obtain output information from an information generation module and transmit it to an output device and an identifier storage module configured to store an identifier corresponding to the output device. An output system and method for restoring a location arrangement of output devices are also provided.
摘要:
A system, method, and computer program product for improving physical lock acquisition for database transaction logs are described herein. In an embodiment, the method operates by receiving a request for a transaction log page and determining whether a requested log page is newly-allocated or already exists. A determination is made regarding whether the last log page is being modified. A physical lock is taken on the requested log page when it has been determined that the requested log page is not newly-allocated and that the last log page is not being modified. Operations on the last log page are synchronized without a physical lock when it is determined that the requested log page is newly-allocated or that the last log page is being modified.
摘要:
A database system providing self-tuned parallel database recovery is described. In one embodiment, for example, in a database system, a method is described for performing recovery operations using an optimal number of recovery threads, the method comprises steps of: (a) spawning an initial recovery thread to perform recovery operations; (b) measuring I/O (input/output) performance with the initial recovery thread; (c) spawning a subsequent recovery thread to perform recovery operations; (d) measuring I/O performance with the subsequent recovery thread; and (e) as long as I/O performance does not degrade beyond a preselected percentage, repeating steps (c) and (d) for spawning a desired number of additional recovery threads. In another embodiment, the database system auto-tunes the cache during performance of database recovery operations to optimize the performance of recovery operations.
摘要:
A distributed database system providing data and space management methodology. In a distributed database system having an allocation page for tracking allocation and deallocation of data pages including a deallocation bit for tracking data page deallocation, a method for determining when to clear the deallocation bit during recovery comprises: during runtime operation, generating log records recording allocation and deallocation of data pages, setting the deallocation bit during deallocation of a data page by a transaction, and clearing the deallocation bit after the transaction has committed; during recovery following a failure, identifying a particular log record corresponding to the deallocation bit set during deallocation of a given data page; determining whether the deallocation of the given data page recorded in the particular log record committed prior to the failure; and if the deallocation of the given data page committed prior to the failure, clearing the deallocation bit.