I have more than 25 years of extensive experience working as a Senior Database Engineer, Senior Oracle DBA, and Database/Java Architect in production environments and IT consulting companies. I am a well-known specialist in Oracle/SAP HANA and BigData IT communities and a developer of database Chatbot, Tuning and ETL software, an author of a book for Oracle database performance tuning. I have very strong skills as Senior Oracle DBA, Oracle Team Leader, DBA Manager and Senior NoSQL database engineerI am an author of Oracle10g database tuning book (http://books.google.com/books?id=bxHDtttb0ZAC&printsec=frontcover&dq=Danchenkov&hl=en&sa=X&ei=z08-T8PzCOuK4gToptGwCA&ved=0CDEQ6AEwAA) and popular Oracle and NoSQL database software like dbTrends for Oracle or NoSQL Viewer.I have solid experience with NoSQL (MongoDB, Apache Hadoop, CouchDB, HBase, Cassandra) database management and application development.Key skills & experience:* 20+ years of extensive experience with Oracle6/7/8/8i/9i/10g/11g/12c database systems under HPUX, Sun Solaris, RedHat AS Linux, Windows environments as Senior Oracle DBA and Senior Systems Engineer.* Very strong skills and background in BigData NoSQL Hadoop, HBase, MongoDB, Cassandra, Couchbase, CouchDB database management, performance tuning and troubleshooting.* Design and implementing data migration projects from Oracle to BigData NoSQL databases.* Architect, design and developing of software tools for data migration and management for Oracle and NoSQL databases like Apache Hadoop, HBase, MongoDB, Cassandra, Couchbase, CouchDB.
Listed skills include Oracle, Performance Tuning, Oracle Rac, Pl/Sql, and 34 others.