1.Working and troubleshooting all kinds of technical issues related to Stubhub.com databases(dev/qa/stage/production over 300+ instances)2.Built, maintenance on MYSQL clusters(1 primary to multiple standby) in both Ali and AWS cloud.Provide 24x7 on call Support for Critical production database(mysql&oracle) issues and interact with On-Shore teams and drills in China3.Handle all aspects of MYSQL clusters ,ORACLE RAC clusters and Data Guard/Golden Gate/streams/replication issues and… Show more 1.Working and troubleshooting all kinds of technical issues related to Stubhub.com databases(dev/qa/stage/production over 300+ instances)2.Built, maintenance on MYSQL clusters(1 primary to multiple standby) in both Ali and AWS cloud.Provide 24x7 on call Support for Critical production database(mysql&oracle) issues and interact with On-Shore teams and drills in China3.Handle all aspects of MYSQL clusters ,ORACLE RAC clusters and Data Guard/Golden Gate/streams/replication issues and maintain a High Availability Architecture with preferably zero downtimes.4.Stubhub Datacenter migration, disaster recovery plan/implement/testWorking on a migration plan to upgrade database applications from 10g to 11g platform(via Golden gate)5.Performance tuning on mysql databases based on slowlog and performance schema.Create Common Script Platform to standardize all job/tool scripts. Show less

1.Working and troubleshooting all kinds of technical issues related to Walmart.com databases(dev/qa/stage/production over 400+ instances)2. Provide 24x7 on call Support for Critical production database issues and tickets and interact with On-Shore teams and drills in China3.Handle all aspects of ORACLE RAC clusters and Data Guard/Golden Gate and maintain a High Availability Architecture with preferably zero downtimes.4.Activities and testing and switching over of site-facing… Show more 1.Working and troubleshooting all kinds of technical issues related to Walmart.com databases(dev/qa/stage/production over 400+ instances)2. Provide 24x7 on call Support for Critical production database issues and tickets and interact with On-Shore teams and drills in China3.Handle all aspects of ORACLE RAC clusters and Data Guard/Golden Gate and maintain a High Availability Architecture with preferably zero downtimes.4.Activities and testing and switching over of site-facing DATAGUARD physical standby databases.(3 nodes RAC with 20T+ data)5.Successfully implemented US Holiday Freeze Readiness for both 2010 and 2011, trouble shooting/support Holiday sales(20+ Million $ for 2010 Black Friday and Cyber Monday, 21+ Million $ for 2011 Black Friday and Cyber Monday).6.Handle and troubleshoot all aspects of Oracle Enterprise Manager Grid Control and Agents.Working on a migration plan to upgrade database applications from 10g to 11g platform.7.leading a team of 9 other offshore DBA’s to supports multiple systems that have a worldwide visibility and impact to the Walmart brand, with online sales that are many millions of dollars per day – and sometimes per hour. Any downtime and any impact to the service is extremely critical and comes with a high impact to the business Show less

1.Responsible for the administration of 2 3000GB+ production high availability (Veritas Cluster) databases for China Mobile.2.Designed and implemented comprehensive Oracle database backup strategies/solutions using both conventional Oracle tablespace backup methodology and Oracle's proprietary backup facilities like Recovery manager (RMAN) and EBU.3.Monitor database performance via AWR Report and Quest Central. Using Oracle Wait Interface to tune performance.4.Maintained metrics… Show more 1.Responsible for the administration of 2 3000GB+ production high availability (Veritas Cluster) databases for China Mobile.2.Designed and implemented comprehensive Oracle database backup strategies/solutions using both conventional Oracle tablespace backup methodology and Oracle's proprietary backup facilities like Recovery manager (RMAN) and EBU.3.Monitor database performance via AWR Report and Quest Central. Using Oracle Wait Interface to tune performance.4.Maintained metrics on database growth patterns in order to insure adequate storage was available.Participated in design reviews for upcoming application enhancements.Recommended infrastructure changes that would enhanced scalability.5.Worked closely with system engineer to determine optimal server and storage configurations for Oracle databases.6.Applied Oracle patches as necessary.7.Created fact and dimension tables to support data mart. Show less

1.Maintenance three mission critical production databases of China Mobile using Oracle 9.2.0.4(RAC) on Solaris 5.0.2.Monitored database performance via STATSPACK and Quest Central.3.Responsible for production backup and recovery strategy using RMAN.4.Install, configure and setup Database and Real Application Cluster.5.Provide direction and coordination between the Production, Project and IT Operation teams for all aspects of Database Operations6.Troubleshoot and resolve… Show more 1.Maintenance three mission critical production databases of China Mobile using Oracle 9.2.0.4(RAC) on Solaris 5.0.2.Monitored database performance via STATSPACK and Quest Central.3.Responsible for production backup and recovery strategy using RMAN.4.Install, configure and setup Database and Real Application Cluster.5.Provide direction and coordination between the Production, Project and IT Operation teams for all aspects of Database Operations6.Troubleshoot and resolve database and/or application problems encountered by end users.Applied Oracle patches as necessary.7.Implemented various scheduled scripts to import and export data between various servers.8.Analyze, design and data model solutions for business needs in cooperation with various levels of business and systems personnel. Show less

1.According to project requirement,Create database logical model and physical model 2.Installed and configured Oracle 8i/9i on Solaris, OpenVMS, HPUX, and Windows environments.Maintenance the database. 3.Administrated production, development, and test Oracle 8i/9i databases hosted on Sun and HP servers.4.Performed numerous production database migrations/upgrades5.Installed and configured Oracle Parallel Server on Windows and UNIX platforms.6.Designed and implemented database… Show more 1.According to project requirement,Create database logical model and physical model 2.Installed and configured Oracle 8i/9i on Solaris, OpenVMS, HPUX, and Windows environments.Maintenance the database. 3.Administrated production, development, and test Oracle 8i/9i databases hosted on Sun and HP servers.4.Performed numerous production database migrations/upgrades5.Installed and configured Oracle Parallel Server on Windows and UNIX platforms.6.Designed and implemented database partitioning solution to enhance client's application performance.7.Tuned SQL and PL/SQL code using Oracle Enterprise Manager tools and explain plans. 8.Planned, presented, and executed database performance tuning in all environments.9.Database Backup and Recovery. 10.Installed and Configured ORACLE 8i OPS.11.Set up and monitoring of data replication Show less