Dennis Sun
Sr Oracle Apps DBA at SAIC
- Role
- Sr Oracle Apps Dba, Sr Fmw Admin(Idm, Soa, Webcenter, Oas) at SAIC
- Location
- Washington, DC, US
- LinkedIn followers
- 500 followers
About Dennis Sun
Specializing in Oracle database and application performance tuning and troubleshootingOracle Certified Master (OCM) DBAOracle Certified EBS R12 Application DBAOracle Certified Professional (OCP)Oracle Certified SQL Expert20 years solid database administration(including VLDB and data warehouse) in enterprise environmentExtensive experience in installing, configuring, administrating, upgrading, cloning and troubleshooting Oracle E-business suiteExpert level of Oracle Database performance tuning, PL/SQL optimization and troubleshooting skills In-depth knowledge of Oracle database internalExpertise in Oracle RAC, Oracle Restart, ASM, Dataguard, and GoldenGate Experience in installing, configuring, patching, upgrading and integrating Oracle Fusion Middleware, including OEM cloud control, OAM, OUD/OID/OVD, EDQ,ODI, OBIEE(OAS),SOA,WebCenter(OWCC,OWCP),Forms & Reports Experience in managing application server(Weblogic, OC4j, and Tomcat)Strong Programming skill sets of PL/SQL, shell script, Python, wlst and Perl
Experience
Sr Oracle Apps Dba, Sr Fmw Admin(Idm, Soa, Webcenter, Oas)
Apr 2013 — Present · Washington, DC, US
Job responsibility is same as before plus the following projects. Upgrade projects: upgraded Oracle database from 10g to 11g, 12c and 19cmigrated the database from solaris to microsoft azure linux platformupgraded Oracle EBS(financial system) from 11i to R12; Integrated EBS w/OAM and OIDupgraded Oracle IDM from Oracle 10.1.4 to Oracle 11g, 12c,14cupgraded Oracle SOA from Oracle 10.1.4 to Oracle 11g, 12c, 14cIPVFB project:Installed and configured Oracle Business Intelligence Publisher(BIP) cluster, Oracle Data Integrator (ODI) cluster, Oracle Enterprise Data Quality (EDQ) cluster.Developed the deployment guide for BIP(OAS), ODI and EDQ installation and configurationDeployed the code to BIP(OAS), ODI and EDQ for the development teamApplied PSU, bundle patch and bug fix to BIP, ODI and EDQMonitored BIP, ODI and EDQ and troubleshot the issuesDatabase Backup project:setup database backup strategies; configured Fast Recovery Area(FRA); developed scripts to integrate rman incremental backup w/Symantec Netbackup, monitor disk space and backup status, and publish the backup information to internal webpage; Helped PBGC save lots of tapes and shorten the backup time dramatically.Security project: revoked privileges from public, secured listener,disabled or removed most of default accounts, configured audit and encryption, data masking, SSL configuration etc.Fusion Middleware Project:Installed and configured Oracle weblogic servers and Fusion Middleware. Migrated Fusion Middleware.Upgraded JDKHelped development team to move their applications from OAS to weblogicInstalled and upgraded ADFDeveloped shell/wlst scripts to manage and monitor weblogic serverInstalled and configured Oracle WebCenter content management and portalConfigured SSO for WebCenter content management and portal
Education
Virginia Tech
Master, Industrial & System Engineering
2003 — 2005
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