Sr Database Administrator Resume
SUMMARY
- I do have banking experience as oracle DBA / Developer .
- Good experience in Gathering and Analyzing Business Requirements, Database Design, developing and implementing projects on time.
- Experience in Installation, Configuration and Re - Configuration of Oracle Database on Solaris OS, Enterprise Linux and Windows.
- Good at Implementing PL-SQL Coding Standards and writing policies and procedures like Stored Procedures, Functions, Triggers, packages, Indexes and Views.
- Experience in Design, Creating and maintaining the Oracle Database.
- Experience in Administering Oracle Database using Oracle Enterprise Manager, Toad, and PL/SQL Developer.
- Oracle 10g and 11g RAC implementation & administration using Oracle Clusterware (Oracle Cluster ware setup and configuration, RAC installation using ASM, Configuration and Patching, RAC Backup and Recovery)
- Experienced on ASM, RAID and golden gate.
- Expertise in configuring Oracle Streams.
- Experience in configuring Data Guard .
- Experience working on Golden gate for replication and data migration.
- Experience in Backup & Recovery techniques of databases running in ARCHIVELOG MODE using RMAN.
- Data Modelling and normalization of tables.
- Monitoring and optimising the Database Performances through Database Tuning, System Tuning, Application/SQL Tuning.
- Planning and scheduling Physical Backups (offline/online) and Logical Backups (with Export/Import utilities).
- Expertise in UNIX shell Scripting (Bourne Shell).
- Experience in application design using Unified Modeling language (UML), Sequence diagrams, Case diagrams, Entity Relationship Diagrams (ERD), Data Flow Diagrams (DFD).
- Involved in logical and physical data modeling and schema design using Erwin tool.
- Provided support for implementing and upgrading various new and third party application in client site.
- Experience in working with Large Tables and VLDBs.
- Managing Database Structure, Storage Allocation, Table/Index segments, Rollback Segments, Undo Segments, and Constraints.
- Experience in Capacity Planning, Space Management, Database Upgrades / Migration Data Extraction.
- Performance Tuning of SQL statements and Database using tools like Explain plan, TKPROF, SQL Analyze, UTLBSTAT, UTLESTAT, STATSPACK, AWR SQL Loader etc.
- Monitoring and optimizing the performance of the database through Database Tuning - Tuning Applications, Tuning Instance, and Tuning Disk Usage.
- Hands on experience working on High Availability Environments.
- Working experience on VMWARE Server and workstation.
- Experience in Data Transfer from Flat Files and other DBs to Oracle Database.
- Experience in applying Patches on database.
- 24 X 7 Production Database on Call Support.
- Strong analytical and problem solving skills. Willingness and ability to quickly adapt to new environments and learn new technologies.
TECHNICAL SKILLS
Operating Systems: Red Hat Linux RHEL, and Windows OS, Sun Solaris, AIX
RDBMS: Oracle 11g,10g,9i,8i
Languages: SQL, PL/SQL, C, HTML, UNIX Shell Scripting.
Tools: /Utilities: RMAN, OEM, Oracle Management Server, SQL*Loader, SQL Server, Export/Import, TOAD, Data pump, SQL Developer, MS Access, Oracle Streams, VMWARE, VERITAS Net Backup, Putty.
Tuning Tools: AWR, ADDM, TKPROF, EXPLAIN PLAN, STATSPACK.
Database Modeling: Erwin 4.0, 7.3; Oracle Designer.
ORACLE EXADATA: V2 and X2
PROFESSIONAL EXPERIENCE
Confidential
Sr Database Administrator
Responsibilities:
- Installation, Configuration, Designing and Maintaining of Oracle 10g and 11g on RHEL 5.4.
- Installed and Configured, 11g RAC (2 node cluster), along with grid Infrastructure.
- Implemented ASM on RAC and stand-alone databases. Managing disks and disk groups with ASM
- Creation, Configuration and Setting up of RMAN Catalog databases and registering target databases with the Catalog for QA databases.
- Setting up and managing RMAN and Imports for Dev DB’s.
- Refresh the test and development databases from the source production databases on a regular basis using export/import utility
- Involved in Performance Planning and Tuning, using baselines and proactive monitoring, bottleneck elimination and the wait event interface to identify issues.
- Performed production database maintenance and modifications to ensure databases are operational, as well as diagnosed and corrected any database environment problems; monitored database usage, and reported on database performance and system availability.
- Worked with developers to diagnose database related application problems, provided development support to maintain application schema and distribution of data.
- Involved in capacity planning and resource planning.
- Replication using Oracle Streams.
- Oracle Application Express 4.0.2 (APEX) installation and maintenance on both 10g and11gR2.
- Performed database tuning for daily loads and slow response issues.
- Backup and recovery of databases using RMAN.
- Monitor Alert logs for issues.
- Create Shell scripts for database maintenance tasks (Streams, Dump Destinations).
- RDA (Remote Diagnostics Agent) to collect diagnostics info from 11gR2 Exadata to report a bug on Streams Apply.
Environment: RHEL 5.4, Oracle 10g, 11g, RAC, OEM, RMAN, Data Pump, Diagnostic and Tuning Advisors,APEX, Streams.
Confidential
Lead Oracle Production Database Administrator
Responsibilities:
- Manage the team as a lead for Siemens energy projects.
- Installation, Configuration, Designing and Maintaining of Oracle 10g and 11g on RHEL 5.4.
- Installed and Configured Oracle 10g, 11g RAC (2 node cluster), CRS using ASM.
- Implemented ASM on RAC and stand-alone databases. Managing disks and disk groups with ASM
- Implemented the Oracle Physical Data Guard in Maximum performance mode for production system in case of disaster recovery, maintain primary and standby databases.
- Creation, Configuration and Setting up of RMAN Catalog databases and registering target databases with the Catalog.
- Setting up and managing Hot Backups, Exports, Imports.
- Refresh the test and development databases from the source production databases on a regular basis using export/import utility
- Successfully maintained multiple databases. Implemented Grid Control for managing databases.
- Replication and data loading using Golden gate.
- Involved in Performance Planning and Tuning, using baselines and proactive monitoring, bottleneck elimination and the wait event interface to identify issues.
- Performed production database maintenance and modifications to ensure databases are operational, as well as diagnosed and corrected any database environment problems; monitored database usage, and reported on database performance and system availability.
- Worked with developers to diagnose database related application problems, provided development support to maintain application schema and distribution of data.
- Involved in capacity planning and resource planning.
- Generated weekly performance reports to identify and solve the problems with performance.
- Implemented PL/SQL stored procedures, triggers to monitor the performance of Oracle databases.
- Diagnosed Oracle bugs and coordinated with Oracle support through Metalink to resolve them in timely manner.
- Created and troubleshoot DB Links’ issues in Oracle for communicating with external databases.
- Establishing connectivity to databases and monitoring system performance
- Created, scheduled db maintenance tasks, such as tables/indexes analysis, index rebuild, materialized views refresh, db exports and janitorial day-to-day tasks.
- Administering, maintaining, developing and implementing policies and procedures for ensuring the accessibility, integrity and security of all databases.
- Provided 24*7 Production Support.
Environment: RHEL 5.4, Oracle 10g, 11g, RAC, OEM, RMAN, Data Pump, Diagnostic and Tuning Advisors, Golden Gate.
Confidential
Oracle Production Database Administrator
Responsibilities:
- Installation and Maintenance of Oracle 10g on IBM-AIX and Windows platforms.
- Installation, Configuration, Designing and Maintaining of ASM on Oracle 10g.
- Installed and administered Real Application Cluster (10g RAC) environments; adding and removing nodes to the cluster and handled performance tuning using AWR.
- Utilized Grid Control, ASM and Flashback tools to administer multi-node RAC database; also managed redo and undo in the RAC environment.
- Initiated 10g new feature implementations such as Automatic Storage Management, RAC, Flashback features, DBMS Scheduler, ASSM and ASMM to improve performance and manageability.
- Performed replication using golden gate.
- Tuned SQL queries & PL/SQL Applications using AWR, ADDM, Statspack and Execution Plans.
- Applied Patches on RAC, Standalone, Standby databases.
- Evaluated mix of backup and recovery methods based on organizational needs. Implemented, tested and documented various backup/recovery scenarios.
- Wrote scripts for Backup of databases, export of databases and maintenance of archive logs for databases. Streamlined backup procedures and implemented RMAN for backup and disaster recovery.
- Used Data Pump for export and import.
- Database Refreshing / Replication from production to testing using hot backup.
- Designed, developed and maintained UNIX shell scripts to collect and monitor database metrics and Statspack snapshots and reports.
- Performed Table Partitioning, created Index Organized tables and Locally Managed Tablespaces.
- Monitored and provided weekly reports on the server’s memory, disk and CPU I/O using HP tools and UNIX command-line utilities.
- Planned and configured disk layout, mount points and capacity requirements for servers.
- Provided maintenance of user accounts, privileges, profiles and roles.
- Managed undo segments, processes, memory, online redo log files, data files.
- Involved with OLTP relational databases system analysis, design, implementation and management.
- Created logical and physical design, installed and upgraded databases.
- Experience in implementation of enterprise databases on enterprise Storage Solutions using Storage area Networks (SAN).
- Documented the Standard Processes for peers to follow.
Environment: IBM-AIX, Windows 2003, Oracle 10g, RAC, TOAD, Erwin, OEM, RMAN, Data Pump, Diagnostic and Tuning Advisors
Confidential, SanJose, CA
Oracle DBA/Developer, Oracle Production Database Administrator
Responsibilities:
- Installed and configured oracle rdbms on UNIX and windows environments.
- Responsible for administering and supporting production and development Oracle 9i, 10g Databases.
- Responsible for installing, upgrade and configuring the Oracle Server, Creating Databases, Storage Structures and Objects, Database Backup and Recovery, Monitoring and Optimizing Database Performance.
- Responsible for setting and managing user accounts, Granting required privileges to users.
- Creating primary database storage structures (table spaces, rollback segments, etc.)
- Monitoring Scheduled jobs of the daily activities for the performance ofall the databases.
- Writing and maintaining PL/SQL blocks (Stored Procedures, Triggers, Functions)
- Prepare the documents of the process and knowledge transferring about the project to the new team members
- Developing, Testing and Implementing Sound Backup and Recovery Strategy.
- Establish and Document Backup and Recovery strategies and procedures after evaluating various options including RMAN.
- Developing Hot/Cold and logical backup scripts to automate the backup procedures.
- Planning for storage spaces requirements and placing them for optimum I/O performance.
- SQL Loader to load Data.
- Tuning the databases for optimal performance.
- Maintained all documents of Oracle Database operations. Prepared documentation of database backup and recovery standards.
- Data Modelling and normalization of tables.
- Monitoring the Database storage and Day to Day activities.
- Configured scripts to monitor activity with database.
- Cloned Environments to create Patch Test, Development and QA Environments
- Partitioned large tables to increase the performance.
- Created PL/SQL procedures (jobs) to automate maintenance tasks.
- Participated in Disaster Recovery Drills, documented database and application validation steps
- Performing all daily Maintenance tasks. Interacting with Oracle Customer service as and when required.
- Generated scripts for daily maintenance activity like analyzing the tables/indexes, and monitoring their growth rate.
Environment: Oracle 9i, 10g, PL/SQL, SQL*Plus, SQL*Loader, Toad, UNIX, RMAN, ASMSBI
Jr. Oracle DBA/Developer
Confidential
Responsibilities:
- Involved in production support activities 24/7 during on call and resolved database issues.
- Backup Script creation and Standardization. Performed Database Installation and up gradation.
- Created materialized views, table partition for Tuned databases.
- Created indexes, rebuild indexes and maintained indexes.
- Involved in user creation and user access control. Involved in Schema creation and management.
- Implemented Oracle security features and audit mechanisms for Fine grained access control.
- Maintained the RMAN repository and customized recovery catalog.
- Customized Data Guard as a tool for Disaster Planning and implementation.
- Created Logical and Physical standby Databases to ascertain high availability of database during system crashes.
- Performed database tuning for daily loads and slow response issues.
- Used Triggers for database activities, like delete, update triggers.
- Used STATSPACK, PERFSTAT, TKPROF utilities for Tuning and analysis.
- Involved in session management and monitored the critical wait events in the database.
- Involved In query optimization and using rule based optimizers and cost based optimizers.
- Used SQL* Loader for data import from remote databases
- Written the control files in SQL*Loader to load the files in database tables.
Environment: ORACLE 9i, SQL, PL/SQL, Toad, Pl/SQL Developer, Cronjob, Import/Export, UNIX AIX 5.1, Windows NT.
