Dokumen tersebut membahas tentang cabaran profesi keguruan, termasuk meningkatkan kualitas sekolah, pengajaran yang efektif, dan pentingnya budaya sekolah yang mendukung. Dokumen tersebut juga memberikan contoh program untuk meningkatkan prestasi budaya sekolah.
Intuit leverages social media through an integrated culture and set of tools. Key lessons include: 1) maximize Facebook for acquisition, sales and experiments; 2) use lean experimentation to test hypotheses before decisions; 3) identify and prompt advocates to share through easy and incentivized ways; 4) Facebook sales campaigns and partnerships can increase traffic; 5) infographics drive sharing more than blogs; 6) build thought leadership through relationships. The presentation emphasizes measuring social impact, adapting practices, and focusing on customers.
The researchers developed a micro-formulation method to formulate new chemical entities for intravenous injection using only 2-3 mg of the compound. They tested solubility of compounds in various formulation bases using a 50 microliter scale, requiring 100-150 micrograms of compound per test. Results were generally comparable to conventional formulation methods using larger quantities. The micro-formulation approach allows rapid early stage animal screening with minimal compound quantities.
This document discusses adding nodes to an Oracle Grid Infrastructure (GI) configuration in Oracle Database 11g Release 2. It notes some differences when adding nodes in 11gR2 GI compared to 10gR2. Key steps include:
1. Performing prerequisite checks like verifying user equivalence between nodes and disabling the ntpd service if using octssd.
2. Running the cluvfy command to verify the new node meets cluster requirements.
3. Using the addNode.sh script to add the new node, either through interactive mode which does not work correctly or through silent mode by specifying parameters.
4. The process involves pre-checks, modifying configuration files like hosts, and installing Oracle
Mothers Against Drunk Driving (MADD) was founded 25 years ago by a mother grieving the loss of her daughter in a drunk driving accident. It has grown into one of the largest non-profit organizations focused on ending drunk driving, supporting victims, and preventing underage drinking. The document discusses MADD's mission, programs and goals, the author's personal connection to their cause through a family member's death in a drunk driving accident, and ways for readers to get involved through donations or accessing support materials.
This document discusses the changing nature of social media marketing. It argues that a collaborative approach focused on starting conversations, engaging consumers, tracking responses and amplifying user generated content is more effective than a top-down "monologue" style. Several case studies are presented that exemplify engaging customers, responding to issues, and leveraging word of mouth marketing through social media. The key is moving from a one-way monologue to fostering two-way conversations and cooperation.
The first three sentences summarize a story about a skilled Call of Duty player who was found guilty of being too good at the game and was banned from playing Xbox Live. The next three sentences summarize a story about a man who finds a hare in a field, cooks it in his lair. The final three sentences summarize a poem about the natural cycles of growth, blooming, and decay in springtime.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness, happiness and focus.
The document discusses project monitoring and control processes focused on integration and scope. It describes monitoring and controlling project work, which involves tracking progress against the project management plan. It also discusses performing integrated change control, which involves reviewing all change requests, approving changes, and updating project documents. Additionally, it covers validating and controlling the project scope, which involves formalizing acceptance of deliverables and managing changes to the scope baseline.
The document describes the assembly instructions for a Styrocontrol 1.8 system. It includes a bill of materials and step-by-step instructions to construct the main components: a silo to hold pellets made of MDF sheets with a cloth cover, a PP valve at the bottom, a support structure made of welded metal profiles, a venturi system connected to pneumatic tubes, a pressure regulator, and straps to secure the tubes. Diagrams illustrate the pneumatic circuit that powers the system using a venturi and pedals to control a pneumatic cylinder and suction speed. Contact details are provided for the design team.
The document discusses navigation options for moving between different sections or pages. It includes multiple instances of "Back to menu" and "Next" buttons that allow reviewing previous or following pages within a larger document structure.
The EXPO was a large world's fair held in Osaka, Japan in 1970 to help stimulate the local economy and showcase Japan's recovery from World War II. Over 64 million people attended the EXPO over its 184-day run, seeing pavilions from over 80 countries and getting a glimpse of Japan's growing industrial and economic power on the global stage. The EXPO site has since been redeveloped into a large public park and the symbol of the EXPO, the Festival Gate, remains as a landmark in Osaka.
An Alternative Development Path: India and the “Cultural Tunnel” Turnoff Steve Zavestoski
The final lecture in a series of lectures at ABV Indian Institute of Information Technology & Management, Gwalior, delivered in February/March 2014. This lecture explores hypothetically the possibility for India of a "cultural" rather than technological tunnel through what economists and others describe as the Environmental Kuznets Curve.
This document discusses various methods for checking the health of Oracle database storage structures. It describes tools from Oracle like Hcheck scripts, Health Monitor Checks, and Log Scanner that check data dictionary integrity and consistency. It also discusses third party tools like ParnassusData recovery manager and hcmon. Specific checks covered include dictionary integrity checks, data block integrity checks, and ASM health checks. The document provides technical details on how many of these checks operate.
Vbox virtual box在oracle linux 5 - shoug 梁洪响maclean liu
The document describes setting up an Oracle 11g Release 2 RAC environment using VirtualBox virtual machines on Oracle Linux 5.7. It outlines planning the RAC logical architecture and installation requirements. It then details steps to create two virtual machines, install Oracle Linux on them, configure user accounts and directories for the Grid and Oracle software installations, and prepare the systems for the Oracle software installations.
Shoug at apouc2015 4min pitch_biotwang_v2maclean liu
Biot Wang introduces the Shanghai Oracle User Group (SHOUG), which he has been a member of for one year. SHOUG holds Oracle-related meetings and activities a few times a year to share knowledge. While some meetings have been more successful than others due to factors like scheduling, SHOUG is still learning and aims to make meetings better over time. The group has grown from a few members to over 400 currently. SHOUG's goal is to help members improve their Oracle skills and knowledge through sharing.
Biot Wang introduces the Shanghai Oracle User Group (SHOUG), which he has been a member of for one year. SHOUG holds Oracle-related meetings and activities a few times a year to share knowledge. While some meetings have been more successful than others due to factors like scheduling, SHOUG is still learning and aims to make meetings better over time. The group has grown from a few members to over 400 currently. SHOUG's goal is to help members improve their Oracle skills and knowledge through sharing.
This document discusses various techniques for optimizing JDBC performance when accessing an Oracle database. It provides examples of common issues like repeatedly opening and closing database connections, failing to close result sets and statements, and not using prepared statements with bind variables. The solutions outlined include using connection, statement and result set pools, try-finally blocks to ensure proper closing, and leveraging features like prepared statements, bind variables, batching, and prefetching to reduce round trips.
Parnassus data recovery manager for oracle database user guide v0.3maclean liu
ParnassusData Recovery Manager (PRM) is an enterprise Oracle database recovery tool, which can extract database datafile from Oracle 9i, 10g, 11g, 12c directly without any SQL execution on database. ParnassusData Recovery Manager was developed by Java, which can be used cross platforms. It can be run without any installation. Download it, and click to run
PRM has full rich GUI for any command. It is not necessary to learn script or master any skill in Oracle data structure. Recovery Wizard is integrated in the tool.
2. About Me
Email:liu.maclean@gmail.com
Blog:www.askmaclean.com
Oracle Certified Database Administrator Master 10g and 11g
Over 7 years experience with Oracle DBA technology
Over 8 years experience with Linux technology
Member Independent Oracle Users Group
Member All China Users Group
Presents for advanced Oracle topics: RAC, DataGuard, Performance
Tuning and Oracle Internal.
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8. 预备知识-CPUs
这里的CPU数是指逻辑CPU数(Number of logical CPUs available
(includes hardware threads if hardware threading is turned on))
当硬件线程技术打开时,例如:
POWER SMT(Simultaneous Multi-Thread)
Intel HT(Hyper Thread)
此时一个CPU core被视作2个或更多个逻辑CPU
NUM_LCPUS仅在11.2.0.2之后的报告中出现
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9. Host CPU
“Load Average” begin/end值代表每个CPU的大致运行队列大小。上图中快照
开始到结束,平均 CPU负载增加了。
%User+%System=> 总的CPU使用率,在这里是29.0%
Elapsed Time * NUM_CPUS * CPU utilization= 299.70 (mins) * 64 * 29%=
5562.4 mins=Busy Time
与《Operating System Statistics》中的LOAD相呼应
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10. Instance CPU
%Total CPU,该实例所使用的CPU占总CPU的比例 % of total CPU for
Instance
%Busy CPU,该实例所使用的Cpu占总的被使用CPU的比例 % of busy
CPU for Instance
例如共4个逻辑CPU,其中3个被完全使用,3个中的1个完全被该实例使用,
则%Total CPU= ¼ =25%,而%Busy CPU= 1/3= 33%
当CPU高时一般看%Busy CPU可以确定CPU到底是否是本实例消耗的,还是
主机上其他程序
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11. % of busy CPU for Instance
% of busy CPU for Instance= (DB CPU+ background cpu time) /
(BUSY_TIME /100)= (250,777.19 + 7,195.70)/ (33,448,718/100)= 77.1%
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12. % of total CPU for Instance
% of total CPU for Instance= (DB CPU+ background cpu time) /
((BUSY_TIME+IDLE_TIME) /100)= (250,777.19 + 7,195.70)/
((33,448,718+81,844,586/100)= 22.4%
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13. %DB time waiting for CPU (Resource Manager)
%DB time waiting for CPU (Resource Manager)=
(RSRC_MGR_CPU_WAIT_TIME/100)/DB TIME= (138,776,449/100)/(61,052
* 60)= 37.88%
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17. Time Model Statistics
Time Model Statistics几个特别有用的时间指标:
• parse time elapsed、hard parse elapsed time 结合起来看解析是否是主要矛盾,若是则重点是
软解析还是硬解析
• sequence load elapsed time sequence序列争用是否是问题焦点
• PL/SQL compilation elapsed time PL/SQL对象编译
• 注意PL/SQL execution elapsed time 纯耗费在PL/SQL解释器上的时间。不包括花在执行和解析
其包含SQL上的时间
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18. Time Model Statistics
• connection management call elapsed time 建立数据库session连接和断开
• failed parse elapsed time 解析失败,例如由于ORA-4031
• hard parse (sharing criteria) elapsed time 由于无法共享游标造成的硬解
析
• hard parse (bind mismatch) elapsed time 由于bind type or bind size 不一
致造成的硬解析
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21. Wait Class
SQL> select distinct wait_class from
v$event_name;
WAIT_CLASS
----------------------------------------------------------------
Concurrency
User I/O
System I/O
select name,wait_class from v$event_name order by 2;
Administrative
Other
Configuration
Scheduler
Cluster
Application
Queueing
Idle
Network
Commit
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29. Global Cache Efficiency Percentages (Target
local+remote 100%) (RAC特有)
Avg global cache cr block receive time (ms):0.7
Avg global cache current block receive time (ms):1.0
至关重要的2个指标,结合其他节点的AWR报告一起分析这2个指标, 一般要求小
于2ms
若在RAC实例之间这2个指标差异很大,一般说明interconnect问题出现于OS
buffer层或者网卡上
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30. Avg global cache cr block receive time (ms)
该指标反映平均每个global cr块从申请到收到的耗时
Avg global cache cr block receive time (ms)= 10 * gc cr block receive time / gc cr blocks
received = 228,252 / 134,978 * 10 = 16.91ms
Time to process CR block request in the cache = (build time + flush time + send time)
相关指标:
• gc cr block flush time
• gc cr block build time
• gc cr block send time
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31. Avg global cache current block receive time (ms)
该指标反映平均每个global current块从申请到收到的耗时
Avg global cache cr block receive time (ms)= 10 * gc current block receive time / gc current
blocks received = 116,862 / 790,899 * 10 = 1.47ms
Time to process current block request in the cache= (pin time + flush time + send time)
相关指标:
•gc current block pin time
•gc current block flush time
•gc current block send time
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38. 某银行 gc cr block lost真实案例
Ierrs is the number of received packets that the system recognized as
being corrupted.
Global Cache问题一定要和OS和Network层结合起来看,ifconfig、
netstat、syslog信息极易获得,nmon、osw亦有价值
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45. AWR SQL ordered by Elapsed Time真实案例
对于鹤立鸡群的SQL很有必要一探究竟,跑个@?/rdbms/admin/awrsqrpt看
看吧!
1. %Total - Elapsed Time as a percentage of Total DB time这个语句耗总
的DB TIME的百分之多少
2. %CPU - CPU Time as a percentage of Elapsed Time 这个语句耗费的
DB TIME里CPU占多少比例这个语句是否是CPU敏感的
3. %IO - User I/O Time as a percentage of Elapsed Time 这个语句耗费
的DB TIME里IO占多少比例这个语句是否是IO敏感的
4. Captured SQL account for 94.8% of Total DB Time (s) 对于不绑定变
量的应用来说Top SQL有可能失准,所以要参考本项
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46. 超高Version Count真实案例
Version Count高易造成一系列cursor sharing性能问题,包括可能的ORA-
4031、KKSFBC CHILD COMPLETION、Latch:shared Pool、cursor: mutex
S or X
你有必要为超高的version count 提一个Service Request!
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