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utilization; A free entry-level database is required to hold the training and scheduling DBA; An entry-level database is required for free release of self-reliant software vendors (ISVs) and hardware vendors; It is necessary to take advantage of the free

arbitrarily closed connection. When connection pooling is established, the connection pool is configured to get a preset number of connection objects from the database at once. These connection objects are free connections that the system can allocate, and subsequent connections are taken from the connection pool, which avoids the overhead of arbitrarily establishing and closing connections.(ii) Allocation

an independent tablespace or hard disk space to improve the performance of data operations. The indexes corresponding to a large table are usually relatively large. Therefore, when the hardware conditions permit, you can store the index table and data table on different hard disks to improve the database performance. For small objects (such as data tables), you can store them in a tablespace. In fact, this tablespace is like paper boxes in the wareho

My rotten girl blog moved to godaddy's free Linux host a few days ago. Migration is smooth and easy to use. Some problems have also been found. There are several main types. 1. publishing an article cannot be switched to the visual editing mode. 2. Images cannot be uploaded in the background. I am now using external link images to solve this problem. 3. You cannot enter the document tag. 4. coshtmlcache can

Reprint: http://www.cnblogs.com/lyhabc/p/3322437.htmlIt's good. SQL Server database Automatic Backup tool SQLBACKUPANDFTP (full featured)The main tool is to automatically back up the database, one-click Restore database, send backup database log report to the mailbox, automatically compress the backup good databasePerf

; -(void) Insertintotablemodel: (ID) model; -(void) Deletefromtablemodel: (ID) model; -(Nsarray *) Selectalltablemodel: (ID) model; @end According to the tool class that I wrote, you can store the data in the database according to any type of model without worrying about the database without having to write. Of course, you can store any type of model directly if you have a very good understanding of the

An online 2k game, every second is scary. The traditional hibernate direct plug-in library is basically not feasible. I'm going to deduce a lock-free database operation in one step.1. How to lock in concurrency.A very simple idea to convert concurrency into a single thread. Java's disruptor is a good example. If you use the Java Concurrentcollection class to do, the principle is to start a thread, run a que

Document directory Here are some useful tools: Here are some useful tools: First: erdesigner ng Official website is: http://mogwai.sourceforge.net /? Welcome: erdesigner_ng An open-source product of SourceForge. The current version is 1.4. The following are official descriptions: Program code The mogwai erdesigner is a entity relation modeling tool such as Erwin and Co. the only difference is that it is open source and does not cost anything. it was designed to make

(abort)License High Water mark = 145Mon Sep 28 02:39:37 2015Instance terminated by LMD0, PID = 24228Mon Sep 28 02:39:38 2015 From the above log, at 2:03 in the beginning of the error ORA-00600, continued until 2:39, lmd0 process began to report the same error, and then the LMD0 process forced the database instance terminated. Direct search of Oracle MOS looks a bit like this bug, but it's easy to rule out

Campus Forum is one of the indispensable parts of campus network. Although the forum based on the use of asp+access simple, easy to install, but MySQL database with its short, convenient, fast, free and other advantages become many sites currently the preferred database, plus the PHP language also has a cross-platform,

Upload | upload pictures | data | Database for a long time to write a program, but because Lai did not want to write me, today is just free, so write this small program is easy to see it, not much to say this start: Let's do an upload. The field of the data base is automatically numbered with the ID big field type is OLE oh on the simple that field okay 　　 upp