performance tuning in oracle 10g ppt

... string functions INSTR, SUBSTR, and REPLACE have analogs in Chapter 7, “Regular Expressions: String Searching and Oracle 10g. ” The INSTR Function INSTR ( in- string”) is a function used to find ... SUBSTR(original string, begin [,how far]) An original string is to be dissected beginning at the begin character If no how far amount is specified, then the rest of the string from the begin point is ... string has leading and trailing spaces ') FROM dual Which gives: TRIM('THISSTRINGHASLEADINGANDTRAILINGSPACES This string has leading and trailing spaces Both the leading...

Ngày tải lên: 27/06/2014, 06:20

... windows and their reported window rows would be: 120 Chapter | Window 1: Original time Original value Windowed (smoothed) value 12 10 12 = [(12 + 10 + 14)/3] 14 Window 2: Original time Original ... follows: Window 0: Original time Original value Windowed (smoothed) value 12 11 = [(12 + 10 + null)]/2 10 Window 5: Original time Original value Windowed (smoothed) value = [(9 + + null)]/2 Oracle s ... 10g has improved querying, see “DSS Performance in Oracle Database 10g, ” an Oracle white paper, September 2003 This article shows how the Optimizer has been improved in 10g 110 Chapter | Chapter...

Ngày tải lên: 08/08/2014, 18:21

... One-step INSERTs into a TCRO There is another way to insert data into the table We can use a reference to Address_table in the insert without going through the INSERT-null-UPDATE sequence we introduced ... are instantiated into objects using constructors In Oracle s VARRAYs, the constructor defaults to being named the name of the declared type and may be used in an INSERT statement like this: INSERT ... ADDRESS_OBJ In the CREATE TABLE command, we defined the column address as referencing address_obj, which is contained in an object table, Address_table INSERT Values into a Table that Contains Row...

Ngày tải lên: 08/08/2014, 18:21

... function, using in VARRAY, 303-304 tags, 338-340 TAN function, 14 using, 15-16 TANH function, 16 using, 17 TCRO (table that contains row objects), 284 inserting into, 287-288 inserting values into, ... user-defined functions, creating for column objects, 292-297 creating for VARRAY, 320-324 V VALUE function, using, 291-292 using with VARRAY, 306-307 values, inserting into table, 275 inserting into ... calculating, 45-48 summation row, adding, 186-188 summing, within a partition, 189-191 symbolic reference, 185 T table, creating, 274, 279-280 creating in VARRAY, 300 displaying, 275-276 inserting...

Ngày tải lên: 08/08/2014, 18:21

... when paging in case of high object is the system component that provides performance data for the processes running on the system, which are individually represented by their corresponding instance ... the system Page Life Expectancy indicates how long a page will stay in the buffer pool without being refthe buffer, lowering the efficiency of the cache and indicating the possibility of memory ... (KB) indicates willing to consume indicates the amount of memory currently counter value can be very high if the is much less than warm-up phase - sets are accessed, bringing more data pages into...

Ngày tải lên: 17/12/2013, 02:15

... cover the following topics: The Performance- Tuning Process The performance- tuning process consists of identifying performance bottlenecks, troubleshooting their causes, applying different resolutions, ... support engineer on the Premier Field Engineering team Since 1997, he has been developing and supporting SQL Server environments for clients in the financial services, IT consulting, manufacturing, ... Query Performance Tuning Q uery performance tuning is an important part of today’s database applications Often you can achieve large savings in both time and money with proper query performance tuning...

Ngày tải lên: 17/12/2013, 02:15

... in Chapter 7, “Regular Expressions: String Searching and Oracle 10g. ” The INSTR Function INSTR ( in- string”) is a function used to find patterns in strings By patterns we mean a series of alphanumeric ... transition into the newer tools of Oracle 10g Chapter reviews common Oracle functions Chapter covers some common reporting tools in Oracle s SQL*Plus Chapter introduces and discusses Oracle 10g s ... used for individual study or reference, in advanced Oracle training settings, and in advanced xi Preface database classes in schools It is meant for those familiar with SQL programming since most...

Ngày tải lên: 01/06/2014, 01:08

... in Figure 5(b), that is, with two RFDs talking directly to the coordinator intuition In Figure 12, the throughput results are obtained by averaging over the throughputs of each RFD, considering ... interval between the beginning of a transmission of a packet and the beginning of the transmission of the following packet This time is normally necessary for transmitting the packet, receiving ... magnitude higher than those in the active phase [24] G Ferrari et al PAN coordinator Link Link Link Coordinator Coordinator Coordinator Router Router Router RFD RFD RFD (a) (b) (c) Figure 1: Possible...

Ngày tải lên: 22/06/2014, 22:20

... may involve some comparison with similar algorithms, in order to rank their performance and provide guidelines for choosing algorithms on the basis of application domain [3] Assessing the performance ... testing protocol; testing regime; performance indicators; performance metrics, and image databases The first of these, testing protocol relates to the successive approach used to perform testing ... final testing regime concerns worst-case testing What happens when an algorithm processes images containing rare or unusual features? Performance evaluation relies on the use of performance indicators...

Ngày tải lên: 22/06/2014, 23:20

... in Chapter 7, “Regular Expressions: String Searching and Oracle 10g. ” The INSTR Function INSTR ( in- string”) is a function used to find patterns in strings By patterns we mean a series of alphanumeric ... transition into the newer tools of Oracle 10g Chapter reviews common Oracle functions Chapter covers some common reporting tools in Oracle s SQL*Plus Chapter introduces and discusses Oracle 10g s ... used for individual study or reference, in advanced Oracle training settings, and in advanced xi Preface database classes in schools It is meant for those familiar with SQL programming since most...

Ngày tải lên: 08/08/2014, 18:21

... string has leading and trailing spaces ') FROM dual Which gives: TRIM('THISSTRINGHASLEADINGANDTRAILINGSPACES This string has leading and trailing spaces Both the leading ... statement in a script A script is a text file that is stored in the operating system (e.g., Windows) in the C: /Oracle /bin directory (Windows) and run with a START command In the text file, we can include ... empty, as it is in the above example: “RANK().” The part of the function will contain an ordering, partitioning, or windowing clause The ordering clause is illustrated in the above...

Ngày tải lên: 08/08/2014, 18:21

... are using a join (actually an equi-join), the WHERE provides the equality condition for the equi-join 69 The Analytical Functions in Oracle (Analytical Functions I) Adding Ordering to a Joined ... WHERE clause being applied before the GROUP BY 72 Chapter | Adding Ordering to the Query Containing the GROUP BY This query can be reordered by the maximum original salary by adding an ORDER BY, ... to the ordering in the RANK function in this case However, as we pointed out earlier, the use of the final ORDER BY is the preferred way to use the functions The ranking and ordering is done...

Ngày tải lên: 08/08/2014, 18:21

... region attributes, we would be asking for the data warehousing “cube.” The warehousing cube concept implies reducing tables by rolling up different columns (dimensions) Oracle provides a CUBE predicate ... within the region It would probably be more appropriate to have the GROUP BY 156 Chapter | ordering mirror the result set ordering, but as we illustrated here, it is not mandatory ROLLUP In ordinary ... GROUPING(certified), GROUPING (region) FROM employee1 GROUP BY CUBE(certified, region) 162 Chapter | Giving: RN COUNT(*) CERTIFIED - 1 N N N Y Y Y REGION GROUPING(CERTIFIED) GROUPING(REGION)...

Ngày tải lên: 08/08/2014, 18:21

... Springhill Ave 2003 Geaux Illini Dr Alice Rischert, “Inside Oracle Database 10g: Writing Better SQL Using Regular Expressions.” 225 Regular Expressions: String Searching and Oracle 10g REGEXP_INSTR ... programming language, their use within Oracle will be very similar The conjunction of string searching, REs, Oracle 10g, and POSIX is that in rewriting the “normal” string functions like INSTR, ... blank Chapter | Chapter Regular Expressions: String Searching and Oracle 10g For many years, Oracle has supported string functions well (“strings” in Oracle are also known as character or text literals)...

Ngày tải lên: 08/08/2014, 18:21

... Regular Expressions: String Searching and Oracle 10g Alternative Quoting Mechanism in Oracle 10 10g Anyone who has had to deal with quotes in character strings in prior versions of Oracle has had to ... available in PL/SQL since Oracle In the O7 version of Oracle, TABLEs (aka INDEX-BY TABLEs) were introduced in PL/SQL The PL/SQL TABLE is much like the idea that programmers have of an array In ordinary ... Tumma, M., Oracle Database 10g New Features, Rampant Tech Press, 2003 Alice Rischert, “Inside Oracle Database 10g: Writing Better SQL Using Regular Expressions,” Oracle web page: http://www .oracle. com/technology/...

Ngày tải lên: 08/08/2014, 18:21

... standard means of exchanging data over the Internet In HTML, tags are standard For example, is an opening tag for bolding, is a closing tag for underlining, is an opening tag for a header ... A INSTR This function returns the location (beginning) of a pattern in a given string The general format for this function is: INSTR(string, pattern-to-find) For example, the query: SELECT INSTR('Pattern', ... you would be correct Ignoring the two header lines for a minute, note that there are user-defined opening and closing tags that describe the data that is contained in them The names and symbols...

Ngày tải lên: 08/08/2014, 18:21

... hóa Hệ thống lưới phải sử dụng giao thức mở, chuẩn hóa 4/16 Cơ sở hạ tầng Oracle 10g • Oracle Database Clustering • Oracle Application Server • Enterprise Manager Grid Control 3/25/15 5/16 Cluster ... Organization(VO)), liên minh tạm thời tổ chức tập đoàn, liên kết với để chia sẻ tài nguyên và/hoặc kỹ nhằm đáp ứng tốt hội kinh doanh dự án có nhu cầu lớn tính toán liệu, toàn việc liên minh dựa mạng máy ... vực, chẳng hạn tính sẵn có, khả mở rộng, quản lý, phục hồi • Clustering đóng vai trò thiết yếu mô hình tính toán khác Internets, Intranet, hệ thống đòi hỏi giải pháp sẵn sàng cao không bị gián đoạn...

Ngày tải lên: 25/03/2015, 09:52

... the Citrix Plug -in for Oracle Enterprise Manager • Greater IT efficiency for cost savings • Streamlined administration Following is a list of metrics provided by the Citrix Plug -in: • Monitored ... easy and instant access to enterprise applications Using the Citrix Plug -in for Oracle Enterprise Manager to continually monitor the Citrix environment from the Oracle console enables IT administrators ... System • Terminal Services • Data store connection failures • Logical disk • Citrix licensing • Server • Processor • Network interface • Sessions • Improved insight into the system Reporting Capabilities...

Ngày tải lên: 10/12/2013, 05:15

... anyone working with Oracle 10g Rich Niemiec, Oracle Tuning Expert This book is the ultimate for Oracle 10gR2 Tuning! ” —Stan Novinsky, Systems Integration Engineer and Senior DBA Johns Hopkins University ... Oracle Performance Tuning going into the minutest details.” —Shankar Mukherjee, Oracle Consultant ComTel Technologies, Calcutta, India “Since I met Rich, he has influenced my approach to tuning ... functionality built into the Oracle kernel to assist in making tuning an Oracle instance more straightforward The Automatic ADDM is an integral part of the Oracle RDBMS capable of gathering performance...

Ngày tải lên: 24/01/2014, 04:20

... Receivables, Oracle General Ledger, Oracle Assets, Oracle Inventory, Oracle Order Entry, Oracle Purchasing, Oracle Bills of Material, Oracle Engineering, Oracle Master Scheduling, Oracle Work in Progress, ... on engineering the performance of Oracle systems while maintaining the attributes just mentioned To achieve optimal performance, you must incorporate many factors, including engineering performance ... you in investigating performance problems Chapter 7, Performance Engineering Starts at the Design Stage,” explains the holistic approach to performance engineering Performance should be engineered...

Ngày tải lên: 24/01/2014, 04:20