DOUGLAS J. GREENWALT

* ******* **** 914-***-****

Cortlandt Manor, NY 10567 acgzzj@r.postjobfree.com

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

Contact this candidate