Samuel Ignatius Christopher

Oracle Database (on premise and OCI)
Have 15+ years’ experience in managing some of the complex production environment in Oracle, including RAC, Dataguard, Exadata, including the currently ongoing project to migrate all 11g, 12c database to Oracle 19c. Worked on database security compliance and implemented various controls for PCI, SOX audits. OCI - Server, RAC Database and Java cloud services administration, Compute instance management.

•PostgreSQL
3+ years’ experience in EnterpriseDB PostgreSQL support, currently supporting a high availability production environment large volume database. Implementation and support include EFM (Failover manager), PG bouncer (connection pooling). PEM, multiple standby (synchronous and asynchronous)

•Couchbase, Cassandra (NoSQL)
Starting from 4.5 version support to the more recent 6.5 version, supported upgrades, bucket level, cluster level administration in Couchbase, implemented XDCR for high availability.
DataStax cassandra routine maintenance such as compaction, rebuild of cassandra node when required. Working with datastax support to analyze and find root cause of any critical issues

•MySQL, MSSQL
MySQL commercial edition 5.7. quarterly patch updates. Troubleshoot GTID replication. MySQL dump and restore. Routine DB L2 support, partitioning implementation in MySQL.
MS SQL - windows environment MS SQL database support. Backup, restore. Migration, upgrades.

•Snowflake
Last 1+ year production Snowflake

(2.6 Yrs.)

Performed PeopleSoft

Performed MS SQL

(2.3 Yrs.)

Performed role of Infrastructure

7 Yrs.)

Performed role of datacenter