OracleBlog – 第 9 页 – 笑看数据库江湖的那些事儿……

..oracle service, Study note, Working case

Documented Database Bugs With High “Solved SR” Count

2017-02-02 没有评论

APPLIES TO:

Oracle Database - Enterprise Edition - Version 9.2.0.8 and later

1	Oracle Database - Enterprise Edition - Version 9.2.0.8 and later

PURPOSE:

This note lists "documented" database bugs that have been marked as the solution to a "high number of Service Requests".
For the purpose of this listing:
A "documented" bug means one with a bugno.8 KM document created from BugTag data.
A "high number of Service Requests" means that there are more than 50 "Solved SR" entries for the bug - ie: all bugs in this doc have > 50 "Solved SR" entries from the SR closure data.
It is suggested to restrict the list based on the version of interest, and then use the radio buttons to check on particular features / symptoms / facts linked to the bug descriptions.

The list includes some bugs with a "D" in the "NB" column - this is used to denote a bug fix that is DISABLED by default and so a customer may encounter that issue in DB versions where the bug is marked as fixed.

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This note lists "documented" database bugs that have been marked as the solution to a "high number of Service Requests".

For the purpose of this listing:

A "documented" bug means one with a bugno.8 KM document created from BugTag data.

A "high number of Service Requests" means that there are more than 50 "Solved SR" entries for the bug - ie: all bugs in this doc have > 50 "Solved SR" entries from the SR closure data.

It is suggested to restrict the list based on the version of interest, and then use the radio buttons to check on particular features / symptoms / facts linked to the bug descriptions.

The list includes some bugs with a "D" in the "NB" column - this is used to denote a bug fix that is DISABLED by default and so a customer may encounter that issue in DB versions where the bug is marked as fixed.

KNOWN BUGS: NB Prob Bug Fixed Description P IIII 7272646 Linux- […]

It's my life

从航拍萧山机场飞机降落想到的……

2017-01-29 没有评论

自由是为自觉的人准备的，可往往少数不自觉的人破坏了大部分人的自由。 1月15日，有一段航拍杭州萧山机场飞机降落的视频，在飞友圈中激起很多反响。随机，公安机关介入调查：很快，公安部出台了《治安管理处罚法（修订公开征求意见稿）》，如无意外，一个月后将通过并生效。飞友们所担心的“一刀切”的管理办法很 […]

..oracle service, Working case

Known Issues for Database and Query Performance Reported in 12C

2017-01-28 没有评论

LAST UPDATE:

Dec 13, 2016

1	Dec 13, 2016

APPLIES TO:

Oracle Database - Enterprise Edition - Version 12.1.0.1 to 12.1.0.2 [Release 12.1]
Information in this document applies to any platform.

1 2	Oracle Database - Enterprise Edition - Version 12.1.0.1 to 12.1.0.2 [Release 12.1] Information in this document applies to any platform.

PURPOSE:

In recent quarters, during non-code closure bug review for Performance, it was found that more than 50% of duplicates (36,96) closed by Sustaining Engineering (SE) belonged to version 12.1. As a result this document was created to list most commonly reported and share this with Tier-1 engineers so that they could check this before logging any new bugs. Thus the Goal of this document is to provide a list of known bugs reported in 12C for database & SQL performance for support analysts to check before logging new bugs.

In addition to the bugs listed in this article, there is also a useful list of Documented Database Bugs With High "Solved SR" Count where a high number of Service Requests means that there are more than 50 "Solved SR" entries for the bug - ie: all bugs in this doc have > 50 "Solved SR" entries.” :

Document 2099231.1 Documented Database Bugs With High "Solved SR" Count

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In recent quarters, during non-code closure bug review for Performance, it was found that more than 50% of duplicates (36,96) closed by Sustaining Engineering (SE) belonged to version 12.1. As a result this document was created to list most commonly reported and share this with Tier-1 engineers so that they could check this before logging any new bugs. Thus the Goal of this document is to provide a list of known bugs reported in 12C for database & SQL performance for support analysts to check before logging new bugs.

In addition to the bugs listed in this article, there is also a useful list of Documented Database Bugs With High "Solved SR" Count where a high number of Service Requests means that there are more than 50 "Solved SR" entries for the bug - ie: all bugs in this doc have > 50 "Solved SR" entries.” :

Document 2099231.1 Documented Database Bugs With High "Solved SR" Count

DETAILS: Query Op […]

It's my life

下一站，DJI大疆

2017-01-27 4条评论

不少朋友可能已经知道我离职了，是的，我已经不在ORACLE公司，我去了大疆（DJI）。加入大疆是个非常巧合的机缘。 2016年9月27日，大疆在纽约发布了他们的新的无人机：御（Mavic Pro）。是的，就是这个小家伙，让我有了和当初第一眼见iPhone一代时候的感觉（我也是iPhone一代的用 […]

It's my life

Oracle支持在docker上跑oracle数据库了

2017-01-13 没有评论

Oracle开始支持在docker上oracle数据库了，注意，是单实例，RAC不支持。docker的操作系统需要时候Oracle linux 7或者RHEL 7。 Oracle will support customers running Oracle Database (single insta […]

..experience, Working case

关于物理Dataguard切换导致索引坏块的问题

2017-01-10 一条评论

在11.2.0.2之后，有一个非常重要的dataguard的patch。在使用物理dataguard环境（包括ADG），进行switchover之后，存在导致index block上的invalid SCNs的坏块问题。国内已经好几个行业的大客户，都遇到了这个问题。在index block中的失 […]

It's my life

老书分享《让世界更美好：塑造了一个世纪和一家公司的理念》（IBM百年科技创新）

2017-01-09 没有评论

今天整理dropbox文件夹的时候，发现还保留着老东家IBM百年诞辰的时候，发的一本名为《让世界更美好：塑造一个世纪与一家公司的理念》的专刊。百年老店自然有他存活百年的道理，当年这本书发给员工的时候，不知是基于成本控制的考虑，还是员工激励的考虑，并不是所有员工都能拿到纸质书。我只是“有幸”拿到了它 […]

..experience, Working case

swap不足导致ora-4030

2016-12-30 没有评论

客户一个测试环境，一个主机上面运行了很多数据库，某库的程序会时不时报错ora-4030。加大了pga，然后还检查了ulimit的 data 和 stack都是ulimit。还是报错。进而检查/var/adm/messages，发现有报错swap不足的情况。所以，解决方法是加大物理内存，或者加大 […]

..oracle service, Working case

Solaris操作系统真的停止开发了吗？

2016-12-23 一条评论

Solaris系统将被停止开发，这个消息，据我所看到的，最初的来源是来自thelayoff网站的消息『Solaris being canned, at least 50% of teams to be RIF’d in short term』 All hands meetings bei […]

..experience, Working case

闰秒（Leap Second）问题

2016-12-23 没有评论

2017年的第一天，因为闰秒的关系，加上时差的原因，我国将在北京时间2017年1月1日的7时59分59秒和全球同步进行闰秒调整，届时会出现7:59:60的特殊现象。(国家授时中心闰秒公告) 那么闰秒对数据库有什么影响？（一）具体的说：可以参考：Information Center: Leap S […]

Study note

设置threaded_execution启用12c的多线程模式

2016-12-20 2条评论

Unix/Linux中oracle数据库进程采用多进程模式，如我们可以在系统进程列表中看到pmon，smon，dbwr，lgwr，ckpt等oracle系统进程。随着oracle数据库功能增多，进程数量也随之增加，创建进程的开销以及进程上下文切换的开销也越来越大（进程状态切换 switching 是 […]

It's my life

博客运行在vultr主机上一个月的性能数据

2016-12-20 没有评论

我申请的vultr主机是单核CPU，15GB的ssd的硬盘，768M内存，每月1TB的流量，对于ss来说已经完成足够，目前有日本，新加坡，美国，德国，荷兰，法国等地的服务器。价格是每月5刀（每小时0.007刀），首次注册，如果用我这个Summer Promo Code，你可以额为获得20刀的费用；或 […]