查询词典 enqueue

In 10.2.0.4 database alert log the following error appears: ORA-00494: enqueue held for too long (more than 900 seconds) This error can also be accompanied by ORA-600 [2103] which is basically the same problem - a process was unable to obtain the CF enqueue within the specified timeout (default 900 seconds).

ORA-00494或许还会伴随 ORA-600 [2103]错误的出现，这是Oracle10.2.0.4中引入的一个行为改变。在Oracle10.2.0.4中，如果一个进程在指定的时间（默认900秒）内无法获得CF锁，则CF锁的执行进程会被kill。从Metalink上可以发现，CF enqueue相关的bug是相当的多，10.2.0.4这个行为的引入，估计是Oracle视图对这个问题做出解决的一种尝试。

Thu Apr 2 10:55:36 2009 Errors in file /bdump/test.trc: ORA-00494: enqueue held for too long (more than 900 seconds) by 'inst 1, osid 82866' Thu Apr 2 10:55:39 2009 Killing enqueue blocker (pid=82866) on resource CF-00000000-00000000 by terminating the process

Oracle10.2.0.4中，如果数据库压力较大，IO发生短暂停止响应的时候，可能导致数据库实例崩溃。在alert中可以找到如下错误

The invention provides a method for achieving priority level for generating sequence of mapping items which are transformed by network address, the method comprises the following method, first, when an address conversion apparatus needs to converse address after the address conversion apparatus receives a data packet, judging whether the items are generated, upwards sending the data packet to a CPU when a mapping item is not generated, step B, judging whether concurrent mapping number exceeds the preset mapping enqueue threshold with the CPU, if exceeds the preset mapping enqueue threshold, and judging whether a Referer field is contained in HTTP data, and recording the Referer field or a GET field according to judgment result, writing in a REF table, and arraying a priority level for each user according to a write sequence, and step C, leading the CPU to generate map in turn according to the priority level in the REF table, and then sending down to a forwarding layer to transfer a data packet.

本发明提供一种对网络地址转换的映射条目生成顺序实现优先级的方法，包括下列步骤：步骤A：当地址转换设备收到数据包后，需要进行地址转换时，判断映射条目是否已经生成，在未生成映射条目时，将数据包上送至CPU；步骤B：CPU判断并发映射数是否超过预定的映射入队门限，如果是，则判断在HTTP数据中是否含有Referer字段，并根据判断结果记录Referer字段或者GET字段，写入REF表中，并将每个用户依照写入顺序排列出优先级；步骤C：CPU依照REF表中的优先级依次生成映射，然后下发到转发层面转发数据包。

In our procedures ENQUEUE and DEQUEUE, the error checking for underflow and overflow has been omitted.

和 在操作中不考虑对上溢和下溢的错误检测。

Advanced queuing also has a SOAP-based XML API and supports OCI and OCCI to enqueue and dequeue messages.

高级队列还提供了基于 SOAP 的 XML API 及 OCI 与 OCCI，用于将消息出队与入队。

The queues of the queuing system each include enqueue attributes configured to control a depth of the queue and dequeue attributes configured to control scheduling of the queue.

排队系统的每个队列(40)包括被配置为控制队列深度的入队属性和被配置为控制队列调度的出队属性。

Based on the above-mentioned analysis, this paper improves the classical binary heapscheduling algorithm of data structure from the priority perspective of the queue. We call it"Heap+". This scheme enables the pipelining of the enqueue and dequeue operations toreach very parallelism. At the same time it has very availability of resources andexpandability. It is used in taxis operation of virtual starting time with very precision on thehigh-speed data link.

基于对队列调度算法的介绍和分析，本文从队列的优先级角度入手，对数据结构中经典的二进制堆调度算法进行了改进，使之能通过流水线操作达到高度的并行性，且具备很高的资源利用率和可扩展性，可用于高速链路上高精度虚拟开始时间的排序操作。

The lock-free queues are structured to minimize the use of atomic operations when performing operations on the queues, and to minimize the number of enqueue/dequeue operations to be performed on the queues.

该些无锁队列被构造为当在该些队列上执行操作时，把原子操作的使用降到最少，并把将在该队列上执行的入队/出队操作的次数降到最少。

If you are going to enqueue work items from different threads, you need a lock.

如果您打算从不同的线程排队工作项目，你需要一个锁。

We have a + character, so this corresponds to an enqueue operation on the transmit queue.

我们 有一个+字符，因此，这相当于一个enqueue运作的传输队列中。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。