01 2015 档案

如何调整Exadata DB节点文件系统大小
摘要：如何调整Exadata DB节点文件系统大小http://www.dbaleet.org/how_to_resize_exadat_filesystem_on_db_node/此文整理自MOS文档How to Expand Exadata Compute Node File Systems (Doc... 阅读全文
posted @ 2015-01-28 22:06 dbaquan 阅读(484) 评论(0) 推荐(0)
Cache写策略——write-through与write-back
摘要：原文http://www.dbaleet.org/cach_write_policy_write-through_and_write-back/write-through和write-back这个概念在存储工程师眼里绝对不会陌生，而对于数据库管理员来说并却并不一定十分清楚。我说看到的数据库管理员与存... 阅读全文
posted @ 2015-01-28 21:47 dbaquan 阅读(6341) 评论(0) 推荐(0)
Exadata V2 Battery Replacement
摘要：For some reason, I’ve been working on lots of Exadata V2 systems in the past few months. One of the issues that I’ve been coming across for these clie... 阅读全文
posted @ 2015-01-28 21:41 dbaquan 阅读(303) 评论(0) 推荐(0)
deal ORA-30012: undo tablespace 'UNDO_2' does not exist or of wrong type
摘要：ORA-30012: undo tablespace 'UNDO_2' does not exist or of wrong typeI have 3 node RAC system. I am trying to convert from single to the RAC system. I h... 阅读全文
posted @ 2015-01-25 16:44 dbaquan 阅读(789) 评论(0) 推荐(0)
unix查看内存使用
摘要：在操作系统的运行过程中，管理员常常需要了解系统内存的使用情况，并以此为依据来指导对系统性能的调优，使系统和应用程序运行在最佳的状态。查看内存使用，我们最常用的命令是 vmstat、ps 和 svmon。使用 vmstat 命令确定内存使用情况vmstat 命令总结了系统中所有进程使用的总活动虚拟内存... 阅读全文
posted @ 2015-01-25 16:05 dbaquan 阅读(4555) 评论(0) 推荐(0)
exadata官方文档下载
摘要：Many Oracle DBA managing Exadata are not aware that Exadata documentation is available on every cell under/usr/share/doc/oracle/Exadata/docfolder. But... 阅读全文
posted @ 2015-01-22 22:04 dbaquan 阅读(191) 评论(0) 推荐(0)
exadata官方文档说明
摘要：The V2/X2 Exadata documentation is loaded on every cell server as part of the storage software. It is placed in the following directory:/opt/oracle/ce... 阅读全文
posted @ 2015-01-11 17:14 dbaquan 阅读(364) 评论(0) 推荐(0)

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