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I’m looking for a seasoned Oracle specialist to help me push my database layer to the next level. PL/SQL development is the heart of this engagement, and I need robust, well-structured code that is both fast and maintainable. Here’s what I expect you to handle: • Build and refine PL/SQL Procedures, Functions, and Packages that manage data insertion, updates, and deletion across very large tables. • Tune slow-running SQL with smart indexing, rewritten joins, and thoughtful use of aggregates so every call meets performance targets. • Embed solid validation and error handling throughout the code so bad data never reaches production. • Supply clean deployment scripts and concise technical documentation so the DBA team can roll out changes safely and repeatably. Deliverables: • Optimized SQL query set • Production-ready PL/SQL procedures, functions, and packages • Deployment/rollback scripts • Data-validation reports confirming accuracy and integrity • Technical document outlining logic, parameters, and performance benchmarks I work primarily in Oracle 19c with SQL Developer, though familiarity with MySQL or SQL Server is a bonus for cross-platform thinking. If you’ve repeatedly squeezed milliseconds out of complex queries and can explain exactly how you did it, we’ll be a great fit.
Project ID: 40725332
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44 freelancers are bidding on average ₹1,044 INR/hour for this job

Hello, I can help you with "Oracle PL/SQL Optimization & Development" as per your given project description. We can discuss more in detail during a chat conversation when you are available. I've worked on many PHP projects in recent times. So I am confident on achieving your expected Goals. Please initiate a communication thread to discuss further and start with the project. ⭐ 5.0/5 from a recent client: "A more professional version: “Excellent work! The job was completed within the committed timeline. Great quality, professionalism, and timely delivery. Highly appreciated and recommended.”" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
₹750 INR in 1 day
6.0
6.0

Hi, I’ll begin by reviewing the existing PL/SQL modules, slow queries and execution plans to identify the actual bottlenecks before making structural changes. I’ll optimise the required procedures, functions and packages with careful query rewriting, indexing, validation and exception handling while preserving data integrity. Each change will be benchmarked against the current execution performance and delivered with controlled deployment and rollback scripts. I’ll also document the updated logic, parameters, validation results and before/after performance findings for DBA handover.
₹1,000 INR in 40 days
5.7
5.7

I understand you need Oracle 19c PL/SQL engineering focused on high-volume data operations, query performance, validation, and safe production deployment. I’ll develop and optimize Procedures, Functions and Packages for large-table INSERT/UPDATE/DELETE workloads, then tune SQL using execution plans, appropriate indexing, join rewrites and aggregation strategies. I’ll build robust validation and exception handling so data integrity is protected, while keeping the code readable and maintainable. I’ll provide optimized SQL, production-ready PL/SQL, deployment/rollback scripts, validation results, and documentation covering logic, parameters and performance benchmarks. Approach: I’ll baseline current performance, identify bottlenecks with execution plans, optimize iteratively, validate results, regression-test, then prepare repeatable deployment scripts. 1. Can you share the slow queries/procedures and execution plans? 2. What are the current performance targets or SLA? 3. Will changes be tested in a staging/UAT Oracle 19c environment? I can deliver a thoroughly tested, performance-focused Oracle solution ready for safe rollout.
₹750 INR in 40 days
5.7
5.7

Hello, I understand that you are looking for a seasoned Oracle specialist to optimize and develop PL/SQL procedures, functions, and packages for your database layer. My expertise in Oracle, Database Administration, and MySQL makes me well-equipped to handle this project efficiently. I have a proven track record of tuning slow-running SQL queries, implementing smart indexing strategies, and ensuring data accuracy through robust validation and error handling mechanisms. I am confident in my ability to deliver optimized SQL query sets, production-ready PL/SQL code, deployment scripts, data-validation reports, and technical documentation to support seamless deployment and maintenance. I would love to discuss your project further and explore how we can work together to enhance your database performance. Best regards, Waqar H.
₹1,250 INR in 40 days
4.1
4.1

Your PL/SQL layer will bottleneck under concurrent writes if you're not using bulk operations and proper exception handling in those large-table procedures. Without partitioning or interval-based archiving, your indexes will degrade as data volume grows. Quick questions - are you hitting locking contention during peak hours? And what's your current query response time baseline for the slowest aggregates? Here is the architectural approach: - ORACLE 19C TUNING: Rewrite procedures using FORALL and BULK COLLECT to cut execution time from minutes to seconds on million-row operations. - INDEXING STRATEGY: Analyze execution plans with DBMS_XPLAN and build function-based or bitmap indexes where full scans are killing performance. - ERROR HANDLING: Implement EXCEPTION blocks with DBMS_ERRLOG to trap bad rows without rolling back entire batches during high-volume inserts. I've optimized Oracle workloads for 3 fintech clients processing 500K+ daily transactions without table locks. Let's schedule a 15-minute call to review your execution plans before we commit to the refactor.
₹900 INR in 30 days
5.3
5.3

As a seasoned Full Stack Developer with a specialization in data management and SQL, I am confident in my ability to take your Oracle PL/SQL optimization and development to the next level. I bring with me 5+ years of solid experience working on performance-sensitive projects, perfecting database layers, and delivering reliable digital products. My expertise with Oracle 19c and SQL Developer, complemented by skills in MySQL and SQL Server, makes me well-versed in cross-platform thinking. I have repeatedly demonstrated my ability to squeeze milliseconds out of complex queries by delving deep into smart indexing, rewritten joins, and thoughtful use of aggregates - skills that directly align with your project needs. Beyond just writing code, I understand the importance of robust validation and error handling processes to ensure data integrity. Moreover, I have proven expertise in delivering clean deployment scripts to facilitate easy adoption while keeping rollback processes streamlined for added safety. If you're looking for more than just a developer but rather a long-term partner who can understand your vision and deliver results with clear communication and exceptional attention to detail, then look no further. I'm ready to take ownership of your project, optimize its potential to the maximum, and secure its long-term success. Let's discuss how we can transform your database layer together!
₹800 INR in 40 days
3.5
3.5

? Need faster SQL and production-ready PL/SQL? I can help. Hi, I’m an Oracle PL/SQL specialist with 20+ years of experience in enterprise and large-scale banking database systems. I specialize in turning complex, slow-running SQL/PLSQL into faster, reliable, and maintainable solutions. ✔ Oracle 19c SQL & PL/SQL optimization ✔ Procedures, Functions & Packages ✔ Large-table performance tuning & indexing ✔ Query rewriting, joins & bulk processing ✔ Robust validation & exception handling ✔ Production deployment & rollback scripts ✔ Performance benchmarking & technical documentation I have hands-on experience with high-volume databases where performance and data integrity are critical. Share your slow query or PL/SQL code, and I can analyze the bottleneck and propose an optimized solution.
₹1,000 INR in 40 days
3.6
3.6

Hi, I have 5 years of professional experience as a PL/SQL Developer, working on database development, SQL optimization, performance tuning, data validation, and production deployments. I can handle the complete PL/SQL development and optimization requirements, including: Developing and enhancing PL/SQL Procedures, Functions, Packages, Triggers, and Cursors. Troubleshooting and tuning slow SQL queries using execution plans, indexing strategies, query rewrites, optimized joins, and appropriate aggregation techniques. With 5 years of PL/SQL development experience, I’m comfortable analyzing existing database code, identifying performance bottlenecks, and delivering production-ready solutions rather than simply addressing individual errors. I’m ready to review your existing procedures/packages and slow-running SQL and start with the highest-impact improvements. Best regards
₹1,000 INR in 40 days
3.2
3.2

Hello. Thank you very much for your chance. I have read your project description carefully. I'm a Web, AI & Android Custom | Python, WordPress, Java with over 8 years of experience working with SQL, Oracle, Database Development. I understand you need PL/SQL procedures, functions and packages for large tables, slow query tuning with indexing and rewritten joins, validation and error handling, plus deployment and rollback scripts. The real challenge is tuning without breaking results. A common issue: a rewritten join or a new index speeds one query but changes row counts elsewhere, so reports stop matching. I would compare before and after result sets on every change. I can build it perfectly : First, review the slow queries and execution plans on Oracle 19c. Then, rewrite the SQL and build the packages with validation. Finally, deliver deployment scripts, rollback scripts and the benchmark document. Q1 - Which queries are the slowest, and do you have execution plans or AWR reports? Those save diagnosis time. Q2 - I'd verify row counts after every change, not just timing. Agree on that check? Q3 - Are the large tables partitioned, or is that open to change? Let's connect over a chat so we can discuss this in more detail. Best regards , Muheebwa
₹3,000 INR in 40 days
2.2
2.2

Hello Hope you are doing well "OPTIMIZE ORACLE DATABASE PERFORMANCE" - You want faster, reliable Oracle 19c database operations, and I can optimize PL/SQL and SQL performance. I can develop production-ready procedures, functions, and packages handling large-table operations with validation, exception handling, indexing, joins, and aggregates. I will deliver optimized queries, deployment and rollback scripts, validation reports, documentation, and performance benchmarks with maintainable production-ready code. Could you share the slowest queries or current PL/SQL code for an initial performance review? Looking forward to working with you.
₹1,000 INR in 40 days
1.7
1.7

Hello, I can strengthen your Oracle 19c database layer with production-ready PL/SQL focused on performance, reliability, and maintainability. With 6+ years of experience in database development, I can work on complex procedures, functions, packages, and high-volume data operations across large tables. I’ll optimize slow SQL through execution-plan analysis, indexing, join/query rewrites, aggregation improvements, and efficient PL/SQL logic while keeping data integrity and scalability in focus. Validation, exception handling, transaction control, and defensive checks will be built into the implementation to prevent invalid data from reaching production. I’ll also provide clean deployment and rollback scripts, validation/integrity reports, and concise technical documentation covering logic, parameters, deployment steps, and performance benchmarks. I’m comfortable working with Oracle SQL Developer and can also consider cross-platform database requirements where needed. Best Regards, Shailender
₹750 INR in 48 days
0.4
0.4

Hi, heavy data mutations across large tables in Oracle 19c usually stall due to full table scans, suboptimal Best regards, Tumisang
₹1,000 INR in 30 days
0.0
0.0

I have 10+ years of experience in **Oracle, PL/SQL, SQL, and MySQL**, with a strong focus on database performance and optimization. I’ll analyze and optimize your queries, procedures, and database logic to **reduce execution time, improve reliability, and maintain data integrity** without disrupting production. You’ll receive **clean PL/SQL code, validation and error h**
₹1,000 INR in 40 days
0.0
0.0

Hi, I read your project on Oracle PL/SQL optimization. I'm an early-career developer with hands-on SQL experience (joins, indexing, query tuning basics, validation and error handling), and I'm actively building my Oracle PL/SQL skills. I don't have years of Oracle 19c production experience, so I want to be upfront about that. What I can offer: careful, well-documented work and fast communication. I'd be glad to start with a small paid task, such as tuning 2-3 of your slow queries or writing one procedure with validation, error handling and a rollback script, so you can judge my work before committing to more. I'll document the logic, parameters and before/after performance for everything I deliver. Would you like to try a small sample task first? Thanks
₹750 INR in 25 days
0.0
0.0

Hello, I’m interested in supporting your Oracle 19c project. I have over 10 years of backend development experience, with strong specialization in Oracle SQL and PL/SQL, including procedures, functions, packages, triggers, high-volume data processing, and performance tuning. I have experience optimizing complex queries through execution-plan analysis, indexing strategies, join rewriting, BULK COLLECT, FORALL, exception handling, transaction control, and data-validation processes. For this engagement, I can help with SQL/PLSQL optimization, development and refactoring of procedures/functions/packages, deployment and rollback scripts, validation controls, and concise technical documentation with performance comparisons where applicable. I’m currently available for 20 hours at ₹1,150 INR/hour, for a total estimated budget of ₹23,000 INR. Given the 20-hour scope, I would prioritize the highest-impact bottlenecks first and focus on measurable performance improvements, maintainability, and production-safe code. Best regards, Hernan Henao
₹1,150 INR in 20 days
0.0
0.0

With over 5 years of comprehensive experience in SQL and database management, I have honed the proficiency necessary to meet your project’s goals. Having worked extensively with large-scale databases and mission-critical systems, I fully understand the significance of streamlined PL/SQL development and optimization that can elevate your database layer. Over the years, I've built an impressive repertoire of crafting efficient PL/SQL Procedures, Functions, and Packages. My work is always characterized by its ability to ensure fast query retrievals and seamless database operations - exactly what you're looking for. Moreover, throughout my career, I've also developed a knack for minimizing latency and enhancing overall performance. Frequently tasked with improving slow-running SQL queries by delving deep into logical code analysis and smart indexing techniques, I consistently provide outstanding results. My fluency in Oracle 19c using SQL Developer will be of great advantage to our collaboration; however, my experience with MySQL and SQL Server allows me to bring a broader perspective that often leads to innovative solutions. Lastly, my strong appreciation for clear documentation, validation protocols, and data integrity aligns perfectly with your service requirements and my commitment to on-time delivery means you can rely on my work for any project deadlines. Let's embark on this journey together as we transform your database into a robust yet finely-tuned digital asset.
₹2,000 INR in 40 days
0.0
0.0

Hi, tuned PL/SQL procedures and faster queries for your large tables, with deployment scripts and validation baked in so bad data doesn't slip through. Which tables are causing the most slowdown right now? My team has tuned Oracle heavy workloads before and shaved real time off slow queries. Happy to start on a small milestone first. Regards, Mariam
₹1,250 INR in 40 days
0.0
0.0

As a veteran Oracle specialist with an extensive background in Database Development, I'm well-equipped to handle the tasks outlined in your project. From building robust PL/SQL Procedures, Functions, and Packages to optimizing SQL queries with smart indexing, rewritten joins and thoughtful use of aggregates for optimal performance; I have a true appreciation for creating code that's not just fast, but also maintainable. In addition, I understand the importance of incorporating solid validation and error handling into the code to ensure data integrity is maintained during insertion, updating and deletion processes. Having worked extensively with Oracle 19c, SQL Developer and having familiarity with MySQL or SQL Server, I bring a comprehensive cross-platform thinking along with me. Lastly, beyond just delivering the production-ready PL/SQL elements you're after, I'm prepared to provide clean deployment scripts, concise technical documentation and even data-validation reports confirming the accuracy and integrity of our results. My aim is to establish a long-term client relationship with you built on clear communication and transparent progress updates; so let's work together in pushing your database layer to the next level!
₹1,000 INR in 40 days
0.0
0.0

Hi, I like this project because Oracle performance work is about finding the actual bottleneck, not simply adding indexes. I’d profile the slow SQL with execution plans/AWR where available, review joins, cardinality, indexes, statistics, and PL/SQL loops, then rewrite and benchmark before/after results. I’ve worked with Oracle PL/SQL involving large tables, complex procedures, validation, exception handling, and production-safe deployment scripts. I’d keep changes measurable and provide rollback scripts plus concise documentation for the DBA team. A quick win is checking for full table scans, implicit conversions, and row-by-row processing in the slowest calls. Are you able to share the SQL execution plans and current response-time targets?
₹1,000 INR in 40 days
0.0
0.0

Hi, I’m an experienced database developer with strong SQL and PL/SQL expertise. I can develop and optimize production-ready procedures, functions, and packages, tune complex queries using indexing and execution-plan analysis, and implement robust validation and error handling. I’ll also provide clean deployment/rollback scripts, integrity reports, documentation, and measurable performance improvements for Oracle 19c.
₹800 INR in 40 days
0.0
0.0

Thirunariyur, India
Member since Apr 18, 2025
₹12500-37500 INR
$100-2000 AUD
€750-1500 EUR
₹12500-37500 INR
$10-30 USD
$250-750 AUD
$30-250 USD
$250-750 USD
min ₹2500 INR / hour
$250-750 USD
$2-8 USD / hour
$250-750 USD
$3000-5000 USD
$1500-3000 SGD
$10-30 USD
₹12500-37500 INR
$2-8 USD / hour
€18-36 EUR / hour
$250-750 USD
₹75000-150000 INR