Manager Engineer
Resume:
DOUGLAS J. GREENWALT
Cortlandt Manor, NY 10567 ****************@*****.***
Oracle Database Problem Solver
Database Administration, Database Performance Tuning, Application Performance Tuning, Exadata
Database Machine Administration, Data Modeling, Technical Leadership, Database Architecture,
Database Technical Training and Mentoring
Versatile, dynamic, results-oriented Oracle Database expert with over 20 years of experience in
Database Administration across diverse industries. Highly experienced in all recent releases of
the Oracle Database product line. Demonstrated abilities to resolve business critical database and
application performance challenges across the full scope of the Database L ifecycle, establishing a
reputation for technical depth, credibility, p roductivity, complex problem resolution, and
exceptional customer focus . Excel at business needs analysis employing strong communication
skills and a broad technical knowledge to determine critical business impacts across the entire
Database technical land scape. Self-motivated team player who can thrive in all types of
environments while influencing and developing solid working relationships across functions.
Technical Skills and Expertise
Primary area of specialization is Database and Application performance analysis, tuning, and
mentoring, using the full assortment of Oracle performance analysis and configuration tools and
reports.
Database Expertise:
Oracle 1 2c, 11g, 10g and earlier v ersions
Oracle Database Administration
Exadata Database Machine Administration
SQL and PL/SQL
High Availability, RAC, Data Guard
ASM Grid Infrastructure
Enterprise Manager
Database Analysis Tools, Concepts, and Database Components:
AWR, ADDM, ASH, SQLTXPLAIN
SQL*Developer, SQL*Designer, Toad, Erwin
Oracle Enterprise Manager, SQL*Monitor, SQL Tuning Advisor, SQL Profiles
OraCheck (RACcheck),
Cost Based Optimizer
Partitioning, Compression
OLTP, Data Warehousing, Star Schema, Relational Data Modeling
Indexing Analysis
Application and Database performance analysis
Database extensibility, Database growth analysis
SQL and PL/SQL
Multitenant Databases (Oracle 12c Container and pluggable databases)
Operating Systems:
UNIX (AIX, Solaris, HPUX, Linux) and W indows Oracle datab ase
support
Douglas J. Greenwalt Principal Delivery Engineer Oracle Databases Administration 1
Professional Experience
June 2011 – Present
Principal Service Delivery Engineer
Oracle Corporation – Oracle Advanced Customer Services
Oracle ACS is a global pool of experts within Oracle Support who deliver tailored, proactive and
reactive technical support services for Oracle customers to assist them in maximizing the
stability, availability, and performance of their critical business systems
As a member of the Database and Engineered Systems ( Exadata, Exalytics, Exalogic)
teams within ACS:
Provided short term (typically 1-5 weeks) services to approximately twenty Oracle
customers yearly, primarily at the customer site. Customers have included Fortune 500
companies, federal, state, and city gove rnments, and both large and small private and
public companies and organizations in a variety of industries throughout the United
States. Each engagement was unique and technically complex
Achieved rapid familiarization with the environment, issues, expectations, concerns, and the
roles of the managers, engineers, and other technical support personnel and maintained a
professional rapport with all parties involved, analyzed the technical issues, and advised
about solutions and best practices
Commonly extended consulting assignments as a result of presenting high quality,
understandable, and doable analysis and recommendations and facilitated new contracts by
way of sales scoping calls
Proactively alerted customers to new or alternative approaches or products for development,
QA, and production environments
Acted as a liaison among customer technical and management teams, mentored customer
technical teams, and researched and rapidly responded to customer technical inquiries
Provided in-depth analysis of problematic issues using solid experience in all aspects of
databases and applications to deliver an effective resolution that could be implemented
Enabled faster service request response times by clarifying issues and discussing resolutions
with Oracle Support
Achieved a high level of customer satisfaction as reported I feedback from customers
Proactively worked with customers to ensure the successful deployment of Oracle databases
and database components by providing technical step by step assistance with software
installations, upgrades, and migrations
Delivered technical presentations to customers with corrective recommendations and
alternative approaches to implement best practices
Recommended crisis resolution tasks to correct critical failings which often involved
performance analysis, database and application tuning, and Quality Assurance database and
application tuning. Also included in the tasks were Data Guard, Oracle Enterpri se Manager,
database upgrades, SQL and PL/SQL tuning, relational database modeling, best practices of
the database and application development, and application lifecycle best practice
Advised customers about Relational Modeling and Oracle Enterprise Manager Grid
Mentored customers on data compression and archiving of old data by means of partitioning
Accelerated customer technology adoption
Determined root causes and provided corrective action planning
Created performance assessments and tuning of Production and Quality Assurance
databases for application testing using AWR, ADDM, ASH, SQLTXPLAIN as the main
diagnostic tools
Supported Exadata database management including installing databases and setting up Data
Guard solutions between long distance-separated Exadata Database Machines using Far
Sync, documenting Exadata Database Machine database upgrade procedures for customers,
migrating databases to Exadata, and participating in the installation of Exadata and Exalytics
Performed system configuration health checks including using AWR, ADDM, and Oracheck
(RACcheck)
Tuned and sometimes rewrote SQL and PL/SQL
Created a script library for database analysis
Set up RMAN backups and used RMAN for cloning databases
Douglas J. Greenwalt Principal Delivery Engineer Oracle Database Administration 2
1992 – Present
Independent Technical Consultant
Knowledge Domains, Inc.
Self-Owned Database Consulting Services Corporation
Established and managed all aspects of an independent consulting practice, providing short and
long term Oracle DBA and Architect consulting services to financial and banking Institutions,
hospitality companies, web services, government agencies, educational institutions, and others
primarily in the Greater New York City area.
Almost all consulting was for Database Administration work: development database
administration work prior to 2000 and production database administration since 2000 .
More recent clients included Starwood Hotels, the C ontrol Group, US Army, Nokia, Cigna
Insurance, W eight Watchers, EBS, Edison Learning, Fairleigh Dickenson University, and Global
Business Solutions
Previous experience also included full time Senior Database Administrator positions at Synapse
Group, Consumers Union, Bradford and Reed, BDM, Consumer Task Group, and Fresh Direct.
Education and Professional Training
Education:
M.S. in Computer Science, University of Nebraska, Lincoln, NE
B.A. in History and English, Kearn ey State College, Kearney, NE
Training:
Oracle Training courses in:
Oracle 11g RAC
Oracle 11g New Features
Oracle 11g Data Guard
Oracle 11g Performance Tuning
Oracle 11g Database Administration
Oracle 12g New Features
Oracle 12c High Availability
Oracle Exadata Management (2011)
Oracle Exadata Database Machine Administration (2014)
Internal Oracle Support Performance Analysis and Resolution
Internal Oracle Support RAC analysis and implementation
ACS Engineered Services Exadata Installation (Shadowing)
ACS Engineered Services Exalytics Installation (Shadowing)
ITIL v3 Foundation
Oracle Enterprise Manager using Cloud Control 12c
Oracle 11g Oracle Enterprise Manager Administration
Oracle WebLogic Server 11g
Douglas J. Greenwalt Principal Delivery Engineer Oracle Database Administration 3
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