1. DIANA DAI
Email: dianad150@gmail.com Phone: 212-352-3826
TECHNICAL SKILLS SUMMARY
 Certified Oracle DBA (18 yrs of Oracle DBA, 8 years of MS SQL server DBA and 4 years MySQL and MongoDB)
 Operating Systems: UNIX (solaris, HP, AIX), LINUX, Window
 Database Systems: Oracle 7/8i,/9i/10G/11G, MS SQL Server 7.0/2000/2005/2008, MySQL 5.7, MongoDB 2.6/3
 Oracle Technologies: RAC, DataGuard, RMAN, Partition, Flashback, DataPump, ASM, Grid Control, GoldenGate
 MS SQL server Technologies: Cluster, Mirroring, Replication
 MySQL Technologies: Replication, partition, compression, transportatable tablespace
 MongoDB Technologies: Sharded cluster of replica sets
 Database Backup: Veritas BackupExec, Veritas NetBackup, IBM Tivoli, DataDomain, Avmar
 Data modeling: E/R studio,Erwin, Relational Database Design
 Programming: PL/SQL, Transact-SQL, SQL, Unix Shell Scripting, Perl
 Application: Oracle Financial, E-business suite, PeopleSoft, Hyperion
SUMMARY
Senior DBA with extensive experice in Oracle, MySQL, MS SQL server and MongoDB. Worked for some most premier
companies, including Federal Reserve Bank of New York, Time Warner, Barnes & Noble and some mid-sized
companies. Built extensive production and development experience on OLTP and Data Warehousing environment,
proficiently knowledgeable on Database Clustering, replication, partition, compression, backup/recovery,
optimization/tuning. Keep updated with the latest Database technology and have proved track records to deliver mission
critial projects in tight time line.
EXPERIENCE
Nov.2014 – Current, Barnes and Noble ---- Senior DBA in Oracle, MySQL, MongoDB
Manage the company’s E-Commerce website Oracle production, standby and QA/Dev datababases.
 Provide database management for Oracle Enterprise 11G RAC environments, including setup,configuration, deployment,
backup/restore,monitoring, alerting, auditing and security.
 Install 2-4 nodes Oracle 11G RAC for the company’s website, set up DataGuard physical standby databases.
 Use GoldenGate to replicate selected tables from various databases to a target centralized report database.
 Provide 24x7 support to production databases and critical application release and database deployment.
 Use Grid Control and customsripts to monitor database performance and send alerts, analyze AWR/ADDM/ASH reports for
performance tuning recommendation, review query execution plan to optimize long-running queries.
 Perform capacity planning, implement database security policy, perform backup/recovery and database cloning with RMAN.
 Refresh development and QA databases with production data as requested
Manage 50+ MySQL databases ranging from hundreds ofgigs up to 2 terabytes.
 Install the latest version of MySQL software 5.6 and 5.7 on Linux 6 OS platform, configure database parameters.
 Set up master/slave replication while the master databases are up and running.
 Install MySQL Enterprise Backup software and Percona backup software for physical backup and point-in-time recovery.
 Use mysqldump and transportable tablespace to copy databases and tables from production to QA/Dev environment.
 Create partitioned tables, develop partition rolloff script.. Exchange partition to table.
 Use MySQL compression technology to compress some largest table, reduce space usage by 50-75%.
 Use MySQL EXPLAIN to optimize/tune queries that show up in slow query logs. Add appropriate indexes on base tables or
revise queries accordinly.
 Create user accounts and grant proper privileges. Deploy triggers and procedures.Offer technical advices to developers.
Manage MongoDB Sharded Cluster of replica sets.(router, config, shards )
 Install MongoDB 2.6 and 3.2 software on Linux 6.
 Convert standalone mongod instance to replica set. Add/remove members to replica set,add/remove shards from cluster.
 Use mongodump and mongorestore to export and import data.
 Use MongoDB Cloud Manager and Rockmongo to manage MongoDB.
Sept.2012 – Oct.2014, MediaOcean, -- Senior Oracle and MySQL DBA

2. Worked as production and project DBA, participated in the overall database systemdesign,development and implementation,
provided 24/7 Oracle and MySQL DBA services to databases support and globalinfrastructure across New York, Chicago,
London, India.
 Set up, cofigure and manage Oracle 11gR2 RAC, Data Guard, ASM, Grid Control.
 Install and configure MySQL 5.5, create Master and Slave replication. Develop backup/recover script. Use mysqldump to export
production data to Dev and QA databases. Migrate some databases between MySQL and Oracle. Provide additional support for
MongoDB, Greenplum and Postgres databases.
 Participate full software development and release cycle from Data Modeling, capacity planning, schema design,creation of table,
index & constraints,table partition, materialized view, setup of security standard.
 Optimize database systemby tuning database parameters, tuning SQL and PL/SQL codes for performance improvement.
Jun. 2009 – Sept.2012, Bluewolf Group, -- Senior Oracle DBA and SQL server DBA
Provided 24/7 DBA services to various companies, including NYSE, Vonage, Bluefly, Benjamin Moore, Crowley Maritime,
and many others,on high-availability OLTP and terabytes Data Warehouse environment.
 Provide Oracle 9i/10g/11g Architecture expertise to offer solutions for high availability, backup and recovery, scalability and
performance tuning.Hands on experience in deploying Oracle RAC, Active Data Guard, ASM, RMAN backups.
 Manage high-performance, high-capacity databases in a critical production environment including database installation,
database creation and configuration, general administration, troubleshooting production issues.
 Install and configure Oracle Grid Control 10g/11g/12c, develop UNIX Shell and SQL scripts for proactive database monitoring.
 Develop different backup, disaster recovery, high availabilities strategies,perform point-in-time database recovery, create Data
Guard/standby database, install and support Oracle RAC (2-4 nodes)on ASM and cluster file systems.
 Support MS SQL server 2000/2005/2008/2012, install SQL server cluster, set up warm standy,mirrored site, transactional
replication, peer-to-peer replication.
 Support vaious vendorapplications, Such as Oracle E-business suite, PeopleSoft, Hypersion, Agile, BI applications.
Jan. 2005 – Dec. 31st, 2008, Federal Reserve Bank of New York. – Senior Oracle DBA consultant
Provided support to Database systemof Feds Markets Group, support systems of Treasury securities trading and Feds open
market operations, support cash payment and security lending, overnight repo, discount window between Central Bank and
commerical banks, supports accounting and portfolio management activities for accounts held by domestic banks and foreign
foreign central banks and international agencies.
 Provided production supports forvery high profile Feds Markets Oracle Databases ( Each system has multi-billion dollars
transactions perday ). Implement various high availablility technologies including RAC, DataGuard, Veritas Cluster, RMAN,
grid control on production and its contingency sites to ensure maximum availability of databases.
 Upgrade Oracle Databases from 9i to 10g. Implemented 10g new features and advanced RMAN backup/recovery features,
optimized RMAN backup scripts & process .
 Designed database architecture, Data Modeling, performed physical/logical capacity planning, developed SQL scripts and
PL/SQL packages / procedures,monitored and tuned application performance.
Projects Highlight:
 Built two DataWarehouse databases forFederal Reserve Bank’s market risk and credit risk analysis. Created tables/indexes,
partitions, materialized views, developed very complex canned report queries and PL/SQL packages, procedures,functions, and
optimized them to best performance. (Informatica, ETL, PL/SQL, partition, materialized view)
 Built Feds Treasury securities online trading systemin Oracle 9i/10g RAC database.Work with application development teams
to roll out new projects deployment from development, QA to production environment.
 In financial crisis, rollout Primary Dealer Credit Facility program (PDCF) and Term Securities Lending Facility (TSLF)
application, new loan program offered to primary dealers to promote liquidity in financial market.
 Built VLDBs that contains historical economical data for business report and analysis purpose,created partition and data
loading process,tuned application performance.
Jan.2004-Dec.2004, ING Bank – Senior DBA consultant
 Provided 24*7 production support to 300+ Oracle OLTP and warehouse databases of ING Bank in a global VLDB
environment, supported critical banking systems,including financial transactions, fixed income and equity trading, mutual
funds,annuity.
 Troubleshoot production problems, analyzed root cause and took resolution accordingly.
 Participated in the creation of database standards and best practices; Created scripts to enchance database monitoring; Designed
and implemented onsite and offsite high availability solutions to meet business requirements; Optimized database backup and
recovery processes;
Mar. 2000-Dec. 2003, AOL Time Warner INC., - Senior DBA in Oracle and MS Server New York, NY
 Created and managed 30+ large-scale Oracle 8i/9i and 200+ MS SQL server 7.0/2000 production,staging,development
databases,ranging across finanical, Treasury, legal, HR/benefits, help desk applications. Developed best practices and scripts for
deploying databases. Developed Unix shell scripts, Perl scripts and SQL and PL/SQL procedures to automate operational task,
such as space management, monitoring. Planned and implemented backup and disasterrecovery strategies of databases.
 Engineered Oracle hot stand-by and MS SQL cluster failover technology to enhance availability and scalability.

3.  Built and implemented enterprise database systems through the whole project lifecycle.
 Projects Highlight:
 Installed and managed the Time Warner corporate accounting systemwhich used Oracle Financials.
 Created a mission critical financial warehouse database,extracted 10 years financial metadata from the company’s accounting
database to the new database warehouse system, established a central financial information repository for financial reporting,
budgeting,forecasting purpose.
 Created an analytical supplier Optimizer database,that helped the company headquarter considate information about each
division’s expenditure, manage its spending and increase negotiating leverage with its suppliers.
 Transformed the company’s Benefits systemfrom Mainframe flatfile to Relational Database design,created a web -based
employee benefits systemfor the company’s 80,000 employees, enabling employees to retrieve their payroll, stockoption,
benefits information online.
 Designed and developed a database and web based application to capture information on IT production infrastructure, enabled t o
view/edit information on the company’s applications, servers,databases,products and theirinterrelationships online.
Mar. 1999-Mar. 2000, DAILY RACING FORM, - DBA/Developer New York, NY
 Led a multi-million dollar E-commerce project through its full systemdevelopment cycle from conceptualization to final
deliverable, enabled company’s publishing business to become a fully web accessible system, provided additional steady online
subscription revenue for the company. ( Oracle 8i, Oracle application server, Unix Solaris )
 Gathered business requirements, translated complex business models to data models. Installed, configured and maintained the
company Oracle 8 database serverand Oracle application (web) server. Setup replication between main database server
 and online database,kept high-volume online databases systems up and running smoothly, troubleshooting problems ranged
 from control file/ datafile corruption, process locking, resource contention to performance optimization. Set up monitoring
 and backup/recovery scripts and routine job automation.
 Co-ordinated with the developer team to develop PL/SQL packages and triggers and stored procedures,which included usage of
Oracle text to faciliate text search function.
 Developed ETL processes to extract, transform and load data from legacy Mainframe systemto Oracle.
 Managed Oracle Financial used for the company’s accounting.
1998- 1999, Bigfoot International INC, -DBA/Developer New York, NY
 Participated in the design and development of large-scale Oracle and MS SQL serverdatabase systems and web-based
applications for the company’s B2B business clients,helped them improve their online sales through creative email marketing
and proactive customer relationship management. The functionality of the application included dynamic content generation,
catalog browsing, user information gathering. Developed complex report queries and front end application for business clients to
analyze customer feedback information.
EDUCATION
2002,Baruch College (Zicklin Graduate School of Business), MBA in Finance & Investment, New York, NY
1998,City College of City University of New York, MS in Computer Science, New York, NY
1992, Beijing University, Bachelor of Arts, Beijing, China