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Oracle distributed query optimization

$30-250 USD

Closed
Posted almost 6 years ago

$30-250 USD

Paid on delivery
Looking for tuning help on Oracle SQL block. I have written the query myself and it works fine. I just want it to execute more efficiently and hopefully faster. 1. Query is 4500 lines, but it is composed of about 25 shorter and similar blocks. 2. It currently is executed in the scheduler as a stored procedure 3. Query updates tables on one schema, but all using “Merge” over a linked database where all the source tables exist. a. It looks to the last 3 days of changed data. 4. There are no materialized view logs available nor can I create anything on the linked database. 5. I am unable to provide direct access to the databases or network a. I will provide the SQL b. For each table I can provide the number of rows in the table and any indexes c. There are about 25 total tables and each is used multiple times d. I can provide an approximation of how many rows the queries would result in e. I cannot make any new indexes on the source database f. I have little access to statistics or other things on the source database 6. Both databases are 12c Enterprise [login to view URL] and are 64bit 7. I suspect most of the optimization is going to come from hints in the queries and other ways of optimizing how best to manage the distributed nature of the query.
Project ID: 17134476

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24 proposals
Remote project
Active 6 yrs ago

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24 freelancers are bidding on average $165 USD for this job
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Hi Hope you doing Good I got your scenario , actually i have more than 10 years of Experience in SQL,PLSQL as well as oracle database Performance Tuning and SQL Optimization and Tuning .Please share your code and Further details , let Improve your query performance and May b more efficient way to Achieve target.
$200 USD in 1 day
4.8 (78 reviews)
6.8
6.8
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I am a software engineer with over 13 years of experience in varied technologies. My speciality is Oracle database and Application Express (Oracle Apex) development. I have worked on similar projects for my clients Thanks.
$111 USD in 10 days
5.0 (17 reviews)
5.6
5.6
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I am having more than 9 years of experience in sql server 2005/2008/2012/2014/2016 and oracle(pl/sql). I can provide you better solution by utilizing my knowledge and skills.
$250 USD in 6 days
4.9 (30 reviews)
4.9
4.9
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As an Oracle DBA/Developer with over 15 years experience, I should be able to help you with the optimization of this query.
$200 USD in 3 days
5.0 (2 reviews)
3.5
3.5
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Hey hi let’s have quick discussion. I hope I could help you in this regards. After all performance tuning need lots of parameters to consider but I will try my best.
$200 USD in 3 days
5.0 (1 review)
1.6
1.6
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Hello, I work with Oracle many years. I can advice these approaches: 1. Try to make copy of remote tables in your database, create indexes and collect statistic, after this update your tables, do not use MERGE. Clear temp tables and fill them after each start of your procedure. 2. Use hints, for example "driving_site" and others. For more exact advices I must see the databases diagrams or empty exports of database tables at least.
$222 USD in 10 days
5.0 (2 reviews)
0.8
0.8
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I have 10 year of strong Oracle technical experience. I can suggest the best solution for your problematic sql.
$244 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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Send me your SQL queries in the chat. I'll see how complex they are, and it would be nice if you sent me the structure of your database, so that I could recreate all your terms of execution on my Oracle. I still need your indexes. Since the slow execution of the SQL query is due to the search of the table entries, instead of searching them by the index.
$161 USD in 5 days
0.0 (0 reviews)
0.0
0.0
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Hi, I am skilled and experienced in SQL ,PL/SQL Expert, I have more than 6.8 Years of experience in SQL ,PL/SQL and Application performance tuning I must give a better service than others ,Please fell free to contact me any time Regards, Suresh Challa.
$155 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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My expertise in performance tuning for better sql optimization. Relevant Skills and Experience Need to Chek where exactly performance is dropping. That may be because of db(Memory latches) or in the sql itself.
$151 USD in 4 days
0.0 (0 reviews)
0.0
0.0
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It has more than 8 years of experience working with Oracle, for your requirement we can use many new features that brings the Oracle version 12c, such as RESULT CACHE, we hope you contact us and can coordinate a good development of your requirement.
$247 USD in 4 days
0.0 (0 reviews)
0.0
0.0
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Hello , I have about 7 yrs of experience in Oracle PL/SQL and have worked on performance enhancements. I have worked with fortune 10 companies and delivered high class code . Thanks, Jyoti
$88 USD in 2 days
0.0 (0 reviews)
0.0
0.0
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I have 12 years experience as Oracle DBA. I have real time experience in RAC, Data Guard, Golden Gate and database & query tuning.
$155 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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 Having around 4 Years of experience in IT industry as a Programmer (PL/SQL Developer) as well as production support engineer.  Experience in SQL and PL/SQL.  Experience in writing, Cursors, Joins, Exceptions, Sub queries, Stored Procedures, Functions, Packages and Database Triggers, views, synonyms using PL/SQL in oracle.  Proficient in creating several other database objects like Sequences, Indexes, Views.  Wrote complex SQL queries using Joins, Inline views, Analytical functions, Sub queries and correlated sub queries to retrieve data from the database.  Good Knowledge in Materialized Views.  Experience in modifying various existing packages, procedures, functions, triggers and Materialized Views according to the new business needs.  Experience on using PL/SQL Collections.  Hands on Dynamic SQL and Exception handling..
$155 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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with 10+ year experience in PLSQL performance tuning and optimization. The SQL can be tuning after verification, For taking over this project, I may need the current timings of PL/SQL run for each blocks and explain plan for the current SQL runs. Hope to get in touch with you on this project. Thanks Vasanthakumar Sekar
$133 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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• Implementing, support and maintaining Oracle Financial modules Account Receivables, Account Payable ,GL ,Inventory , Purchasing, Order Management , Purchasing and modules for R12 version. • Sharing in Oracle R12 upgrade project by building business process & test script & security profile & training materials & finding list and its resolution • with Oracle support to diagnose and resolve problems with system. • Build a Gap analysis for requirements against available functionality. • Manage about 400 Oracle users and their requirements. • Recommend and suggest using more ways to manage business flow using oracle various software modules according to the business needs. • Create & manage TARs with the Oracle support organization as required in order to resolve Oracle functionality or data issues. • Design and creation of project plans including deadlines, milestones, etc • Works with end-users to provide functional and technical expertise for system issues. Develops training materials and deliver formal training for each new site • Manipulating the Oracle Discover 4i reports to handle the user's needs. • Provides project management leadership for assigned projects • Designs test cases that ensure that implemented solutions function without error or disruption to business operations. • Provide daily activity reporting against plans and schedules. • Provides remote support to all users of the Oracle EBS system
$30 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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Thanks for providing the information. I am new to this freelancer portal but have good real world working exposure. Would be great to get a opportunity to work together. Looking forward for your positive response.
$155 USD in 3 days
0.0 (0 reviews)
0.0
0.0

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Flag of UNITED STATES
West Bloomfield, United States
5.0
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Member since May 4, 2010

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