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Independent Contractor Resume

Vienna, VA

SUMMARY:

Accomplished and resourceful professional with 25+ years of experience in Oracle database engineering, administration, design, and development; three years in Big Data technology.

TECHNICAL SKILLS AND EXPERTISE:

  • Highly proficient in database clustering
  • Oracle SPARC SuperCluster T4 - 4 and Exadata Database Machine
  • Oracle Real Application Cluster (12c, 11g, 10g, 9i)
  • Hadoop Clusters (Cloudera Distribution for Hadoop ( Confidential ) 4.x, 5.x)
  • Extensive experience in database installation, upgrade, and migration
  • Oracle database upgrade and patching with near zero downtime
  • Data center relocation and technology refresh of database server
  • Expert at troubleshooting and performance tuning
  • Investigation of system resource contention
  • Diagnostics of I/O and network bottlenecks
  • Proactive database configuration and optimization to eliminate performance risk
  • Technical excellence in high availability solutions
  • Oracle Data Guard, backup and disaster recovery

PROFESSIONAL EXPERIENCE:

Independent Contractor

Confidential, Vienna, VA

Responsibilities:

  • Responsible for upgrading and patching 12c RAC databases on Oracle engineered systems (Supercluster and Exadata). Implemented a rolling upgrade approach using (transient) logical standby to achieve near zero downtime for 12.2 RAC upgrade.
  • Manage databases in production, QA, and development environments. The case management database is over 20 terabytes.

Confidential, McLean/Vienna, VA

Database engineer

Responsibilities:

  • Responsible for a big data analytics project including hardware/software selection, implementation of three 13-node Hadoop clusters.
  • Provided engineering support to data scientists including Hive, Impala, Ozzie, Sqoop, Spark, and Hue.
  • Implemented Hadoop Security using Cloudera Manager.
  • Installed and upgraded Cloudera Manager and Confidential .
  • Led a technology-refresh project that upgraded all environments to Oracle 12c, Linux 6, newer Dell bare metal machines, and jumbo frames on network interface 10GbE.
  • Developed silent install scripts and step-by-step instructions for database administrators to install, configure, patch, and upgrade Oracle RAC database to 12c.
  • Integrated high availability best practices into every aspect of system architecture to avoid single point of failure including fully redundant network switches and bonding network interfaces.
  • Relocated all Oracle database servers to a new data center using Oracle Data Guard and NetApp SnapMirror to minimize the down time.
  • Measured and established a network performance baseline including TCP and UDP for Oracle RAC interconnect and storage network.
  • Responsible for migrating all Oracle databases from Sun SPARC to Linux using Transportable Tablespaces.
  • Conducted research and development of running Oracle RAC in virtualization including Citrix Xen, Oracle VM VirtualBox, and VMware. Also evaluated shared storage options when installing Oracle RAC, including NFS, iSCSI/ASM, and OCFS2.

Confidential, Bethesda, MD

Database Administrator

Responsibilities:

  • Senior member of the Confidential DBA team administering Oracle Production and Test databases configured with RAC on Sun E15K and EMC SAN for Confidential and Transportation Security Administration ( Confidential ).
  • Deployed Oracle 11i CRM, Portal, HTML DB, and J2EE applications on Oracle 10g AS.
  • Achieved data import from the staging server to Production without disrupting the application workload using Oracle transportable tablespace, during a major migration of Oracle 11i CRM from 11.5.8 to 11.5.10.Created a Logical Standby database for reporting of Confidential Online Training Center (OLC) application to reduce the primary database workload.
  • Seamlessly migrated 30 airports’ staff scheduling data into Confidential ’s central hosting database.

Oracle DBA Instructor

Confidential, Woodbridge, VA

Responsibilities:

  • Taught database administration classes in Oracle Professional Certificates Program for 8 years.
  • Delivered lectures and provided hands-on lab exercises, enabling students to pass Confidential exams.

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