原创 數據庫性能對比測試實驗
http://blog.csdn.net/liyuming0000/article/details/51240798 PostgreSQL和MySQL的性能對比實驗 http://blog.csdn.net/arvinstudy/ar
2020-06-21 00:10:27
原创 單算子benchmark測試工具pgbench, SQL-bench, mydbtest
TPC：Transaction processing Performance Council 事務處理性能委員會 TPC-B: measures throughput in terms of how many transactions
2020-06-20 23:10:22
原创 Oracle wait event --- buffer cache
http://m.blog.itpub.net/12679300/viewspace-1244578/Buffer Cache是SGA的一部分，Oracle利用Buffer Cache來管理data block，Buffer Cache的
2020-06-20 23:10:22
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原创 Oracle wait event --- log file
www.itpub.net/thread-1777234-1-1.htmllog file switch(checkpoint incomplete):原因：1）存在大量update操作；2）log file size太小，導致log s
2020-06-20 23:10:22
原创 Oracle wait event --- I/O
db file sequential read:db file scattered read, Avg wait time應當小於20ms 如果數據庫執行全表掃描或者是全索引掃描會執行 Multi block I/O ，此時等待物理I
2020-06-20 22:07:27
原创 Oracle wait event --- enqueue
https://blog.csdn.net/notbaron/article/details/51284555latch: enqueue hash chainsenq: TX - row lock contentionenq: TX -
2020-06-20 22:07:27
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原创 Database testing - transaction
https://www.guru99.com/data-testing.html http://www.softwaretestinghelp.com/database-testing-process/ https://dl.ac
2020-06-20 22:07:27
原创 Oracle wait event --- cluster
gc buffer waitgc current block 2-waygc cr multi block request
2020-02-23 08:49:14
原创 數據庫架構對比
http://blog.csdn.net/ggxxkkll/article/details/18569647 MySQL 體系架構 Oracle體系架構 PostgreSQL體系架構 Oracle: http://www.cnb
2020-02-23 08:49:14
原创 Oracle wait event --- shared pool
https://blog.csdn.net/lqx0405/article/details/44777319Library cache包含了共享SQL區(shared SQL areas),私有SQL區(private SQLareas,
2020-02-23 08:49:14
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原创 Oracle wait event --- latch
latch free 其實是未獲得latch ，而進入latch sleep，見《全面解析9i以後Oracle Latch閂鎖原理》
2020-02-23 08:49:14
原创 Oracle rman操作
rman target / cmdfile=test.txt restore spfile from'/bak/hotbak/c-4038538988-20100524-01';(備份的控制文件) restore controlfile
2020-02-23 08:49:14
原创 數據庫TPCE benchmark測試工具
http://www.pgcon.org/2007/schedule/attachments/35-TPC-E%20implementation-Mark-Wong-Rilson-Nascimento.pdf https://wenku
2020-02-23 08:49:14
原创 ROS資料
http://wiki.ros.org/ https://www.zhihu.com/question/35788789 如何學習Ros？課程網址：https://www.shiyanlou.com/courses/854http:/
2020-02-23 08:49:13
原创 Oracle三種table: 堆表Heap Table、索引組織表IOT和聚簇表Cluster
常用數據庫支持情況： Oracle支持堆表，索引組織表，聚簇表Cluster； PostgreSQL只支持堆表，不支持索引組織表； Innodb只支持索引組織表； MyISAM只支持堆表。 Oracle使用rowid數據類型存儲行地址,r
2020-02-23 08:49:13