Denis Tikhonov Email & Phone Number

Moscow, Russian Federation

Moscow, Moscow City, Russia

Oracle contractor, Second Line Support Engineer for VTB Bank.24/7 support for business-critical systems. Initial diagnostics and analysis in case of database instance failures or performance issues. Initiating of Service Requests on behalf of client, giving recommendation and consultation on topic of Oracle database operation.

Sydney, Australia

SQL Services is New Zealand’s largest provider of Database Administration and Consulting Services for SQL Server and Oracle.As an Oracle DBA, working for a managed DBA services company, we as a team support, monitor and stand proactive for large number of databases for some leading corporate clients and for government services as well, both in Australia and New Zealand.Responsibilities:- Providing support of 24X7 to maintain all Databases up and running in Production RAC… Show more SQL Services is New Zealand’s largest provider of Database Administration and Consulting Services for SQL Server and Oracle.As an Oracle DBA, working for a managed DBA services company, we as a team support, monitor and stand proactive for large number of databases for some leading corporate clients and for government services as well, both in Australia and New Zealand.Responsibilities:- Providing support of 24X7 to maintain all Databases up and running in Production RAC and staging RAC environments, installing Oracle and creating database.- Implementation and monitoring of oracle 10g RAC- DB Performance analisys and tuning- Technical support to application development teams.- Administration of all database objects, including tables, clusters, indexes, views, sequences, packages and procedures.- Install, patch and maintain all Oracle software- Implement Oracle Dataguard- Design and implement a backup & recovery system- Installing and supporting Oracle on customer sites- Performing different types of recoveries using Recovery Manager, manually or using Flashback technology.- Supporting users and troubleshooting based on daily alerts by pre emptive monitoring the service board. Show less

Adelaide, Australia

Database consultant and database administrator for several website development projects.Key activities:- Provided DBA expertise in selection, provision and usage of database architectures - Managed MySQL databases in production/dev environments including the installation, configuration, backup, recovery, upgrades, etc.- Developed and optimized in-application SQL code - Provided support to application developers regarding DB/query tuning and performance, data modeling… Show more Database consultant and database administrator for several website development projects.Key activities:- Provided DBA expertise in selection, provision and usage of database architectures - Managed MySQL databases in production/dev environments including the installation, configuration, backup, recovery, upgrades, etc.- Developed and optimized in-application SQL code - Provided support to application developers regarding DB/query tuning and performance, data modeling, schema design and review Show less

Moscow

Oracle service engineer and a technical consultant for “Sberbank of Russia”, Russia’s largest bank, positioned at their head office.Key activities:- Participated as a lead DBA in successful migration of Oracle databases of 14 regional branches into one centralized database using Oracle Goldengate replication.- Performed cross platform database migrations, database version upgrades, patching- Performed database backup and failure recovery using RMAN, Flashback database… Show more Oracle service engineer and a technical consultant for “Sberbank of Russia”, Russia’s largest bank, positioned at their head office.Key activities:- Participated as a lead DBA in successful migration of Oracle databases of 14 regional branches into one centralized database using Oracle Goldengate replication.- Performed cross platform database migrations, database version upgrades, patching- Performed database backup and failure recovery using RMAN, Flashback database, Dataguard, Snapshot standby - Configured multiple Oracle RAC databases on AIX, Linux, Solaris - Designed database audit configuration and investigated security problems - Conducted load testing of RAC databases using Real Application Testing technology, carried out further performance analysis and tuning- Participated as a lead Goldengate administrator in several projects; configured data replication and transformation using Oracle Goldengate software;performed load testing and performance tuning. Show less

The role involved day-to-day management of 100 Oracle 9i/10g/11g database servers under Red Hat Linux, including several 10g/11g RAC databases, as well as daily database maintenance review and server OS administration.Key activities:- Conducted database backups, failure recovery, data migrations- Performed database user management, software upgrades, data reconciliation - Provided DBA support for software developers- Configured database servers from scratch, including… Show more The role involved day-to-day management of 100 Oracle 9i/10g/11g database servers under Red Hat Linux, including several 10g/11g RAC databases, as well as daily database maintenance review and server OS administration.Key activities:- Conducted database backups, failure recovery, data migrations- Performed database user management, software upgrades, data reconciliation - Provided DBA support for software developers- Configured database servers from scratch, including hardware setup, RAID configuration, OS and Oracle software installation and configuration.- Implemented a new automated Disaster Recovery procedure for branch office database servers which reduced recovery time up to 50% Show less

IT manager at a branch office. Key activities:- Provided technical support of a proprietary computerized banking system and local banking cards processing system. - Performed daily database administration of Oracle 8i/9i databases on Solaris- Managed a small Microsoft Windows workgroup: setting up hardware, software, office network infrastructure