Christopher Eshemokhai - Senior Oracle DBA and WebLogic Administrator, Oracle Business Intelligence for Applications

Q: Where is Christopher based?

Christopher is based in Eschborn, Germany .

Q: What languages does Christopher speak?

Christopher speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Christopher have?

Christopher has at least 28 years of experience. During this time, Christopher has worked in at least 19 different roles and for 24 different companies . The average length of individual experience is 1 year and 10 months . Note that Christopher may not have shared all experience and actually has more experience.

Q: What is Christopher's latest experience?

Christopher's most recent position is Senior Oracle DBA and WebLogic Administrator, Oracle Business Intelligence for Applications .

Q: What companies has Christopher worked for in recent years?

In recent years, Christopher has worked for Informationstechnikzentrum Bund (ITZ Bund) .

Q: Which industries is Christopher most experienced in?

Christopher is most experienced in industries like Information Technology , Government and Administration , and Healthcare . Christopher also has some experience in Pharmaceutical , Transportation , and Insurance .

Q: Which business areas is Christopher most experienced in?

Christopher is most experienced in business areas like Information Technology , Business Intelligence , and Operations . Christopher also has some experience in Supply Chain Management , Procurement , and Sales .

Q: Which industries has Christopher worked in recently?

Christopher has recently worked in industries like Information Technology and Government and Administration .

Q: Which business areas has Christopher worked in recently?

Christopher has recently worked in business areas like Business Intelligence , Information Technology , and Operations .

Recommended expert

Eschborn, Germany

Experience

Dec 2022 - Present

3 years 5 months

Senior Oracle DBA and WebLogic Administrator, Oracle Business Intelligence for Applications

Oracle databases 11g, 12c and 19c RAC
Installation, configuration and deployment of Oracle Fusion Middleware 11g & 12c (WebLogic, SOA, Oracle Forms and Report Server, etc., OBIA)
Administration of Oracle 11g, 12c, RAC and 19c
Applying patches
Installation, configuration and deployment of Tomcat
Oracle tuning
The system includes several production, QA, test & development Oracle databases and WebLogic application servers 11g & 12c

Nov 2013 - Nov 2022

9 years 1 month

Frankfurt, Germany

Senior Oracle DBA, WebLogic Administrator, Oracle Business Intelligence for Applications

Informationstechnikzentrum Bund (ITZ Bund)

IT-supported customs clearance. The Automated Tariff and Local Customs Processing System (ATLAS); electronic customs tariff, specialist procedures ZGR-online, ZEUS, Debbi, etc.
Oracle databases 11g, 12c and 19c
Oracle Fusion Middleware 11g, 12c and OBIA
The system includes multiple production, QA, test & development Oracle databases and WebLogic application servers 11g & 12c
Design, installation, configuration and updates
Installation, configuration and deployment of Oracle Fusion Middleware 11g & 12c (WebLogic, SOA, Oracle Forms and Report Server, etc.), Oracle Business Intelligence for Applications
Administration of Oracle 11g, 12c, RAC and 19c
Applying patches
Installation, configuration and deployment of Tomcat
Daily monitoring tasks
Database systems, Oracle Application Server Unix shell scripts. Monitoring of web servers
Monitoring of Oracle jobs (e.g., job failures, etc., with Grid Control 11g, Cloud Control 12c)
Monitoring server availability with Nagios
Monitoring alert_log (ORA errors) with shell scripts
Processing trace files
Tuning, troubleshooting and optimization
Conducting problem analysis
Error resolution
Changing Oracle and WebLogic internal parameters

Sep 2013 - Oct 2013

2 months

Göttingen, Germany

Senior Oracle DBA

Amedes GmbH

Training staff on Oracle 11gR2
Installation and configuration of Oracle 11gR2
Workshops and templates for separating application and database servers
Backup using Networker. Testing and cross-recovery cloning and duplication with RMAN
Tuning and optimization of the data warehouse
Creating standby databases and Data Guard for Oracle 11gR2

Jan 2013 - Jun 2013

6 months

Essen, Germany

Senior Oracle DBA

RWE IT GmbH

Setup, migration, administration and tuning of Oracle 11gR2 RAC and Data Guard 11gR2 on Unix environments (Solaris 11 and Linux Red Hat) and ASM
Supporting all areas of RWE IT's integrated business model as an internal IT service provider
Provisioning, development and operation of standard and specialized software as well as hardware and network infrastructure
The system includes several production, QA, test & development Oracle databases with applications
Data warehouse over 20 TB
SAP systems
Exadata database machine X4-2
Oracle Fusion Middleware
Design, installation, configuration and updates
Installation and configuration of Oracle 11gR2 Real Application Cluster with multiple nodes and databases
Administration of heterogeneous environments (Solaris, Exadata and Linux Red Hat)
Applying 11gR2 patches
Installation and configuration of 11gR2 Data Guard
Installation, configuration and deployment of Oracle Fusion Middleware 11g (WebLogic, SOA, Oracle Forms and Report Server, etc.)
Daily monitoring tasks
Monitoring of Oracle jobs (e.g., job failures, etc., with Oracle Enterprise Manager 11g Grid Control and Enterprise Manager 12c)
Monitoring of servers with Nagios
Monitoring alert_log (ORA errors) with shell scripts
Handling trace files
Managing tickets with HP OpenView Service Center
Tuning, troubleshooting and optimization
Conducting problem analysis
Error resolution
Changing Oracle internal parameters
Backup and recovery
Online backup with RMAN via TSM (Tivoli)
Restoring databases (datafile, tablespaces, point-in-time recovery, etc.)
Migration from Oracle 10g to 11gR2 on Linux environment and Solaris 5.10

Oct 2012 - Dec 2012

3 months

Hamburg, Germany

Senior Oracle DBA

Kuehne & Nagel

Setup, migration, administration and tuning of Oracle 11gR2 RAC and Data Guard 11gR2 in Oracle VM Linux 6.2 on ASM and SAN NetApp in three environments: Hamburg, Hong Kong and New York
The system includes multiple production, QA, test & development Oracle databases with applications for seafreight, airfreight, contract logistics, customer solutions, road & rail logistics, insurance brokers, lead logistics, real estate and SAP systems
Design, installation, configuration and updates
Installation and configuration of Oracle 11gR2 Real Application Cluster and database administration
Applying 11gR2 patches
Installation and configuration of 11gR2 Data Guard
Daily monitoring tasks
Monitoring of Oracle jobs (e.g., job failures, etc., with Oracle Enterprise Manager 11g Grid Control and Enterprise Manager 12c)
Monitoring of servers with Nagios
Monitoring alert_log (ORA errors) with shell scripts
Handling trace files
Tuning, troubleshooting and optimization
Conducting problem analysis
Error resolution
Changing Oracle internal parameters
Backup and recovery
Online backup with RMAN via TSM (Tivoli)
Restoring databases (datafile, tablespaces, point-in-time recovery, etc.)
Migration from Oracle 10g to 11gR2 on Linux environments on NetApp OVM Linux 6.2

Mar 2012 - Aug 2012

6 months

Hanover, Germany

Senior Oracle DBA

Talanx AG

Administration and tuning of Oracle 10g RAC and 11g RAC and Informix 9/10 on Linux OS SLE10 servers
The system includes multiple production, QA, test and development Oracle databases with applications such as a terabyte data warehouse, insurance entry systems, SAP systems, customer relationship management (Siebel), IBM WebSphere 6.1, as well as several internet and intranet applications
Design, installation, configuration and updates
Installation and configuration of Oracle 10g and 11g Real Application Cluster on Veritas Cluster 5.0, and database administration
Applying 11g patches
IBM WebSphere 6.1 as middle tier
Administration of Informix 9/10 database
Daily monitoring tasks
Monitoring Oracle jobs (e.g. job failures etc. with Oracle Enterprise Manager Grid Control 10g, 11g, Nagios and Spotlight)
Monitoring server availability with Tivoli
Monitoring alert_log (ORA errors) with shell scripts
Handling trace files
Tuning, troubleshooting and optimization
Performing problem analysis
Troubleshooting
Changing Oracle internal parameters
Backup and recovery
Online backup with RMAN
Networker
Restoring databases (datafiles, tablespaces, point-in-time recovery etc.)
Migration from Oracle 10g to 11g in a Linux environment on Veritas Cluster 5.0

Jan 2010 - Dec 2011

2 years

Munich, Germany

Senior Oracle DBA

Baxter (Deutschland) GmbH

Warehouse management systems and automation technology
Oracle Application Server and database
Infrastructure qualification in a validated environment
Building Oracle 10g, 11gR2 Real Application Cluster
The system includes multiple production, QA, test and development Oracle databases with applications for warehouse management, Oracle Application Server and IBM WebSphere 6.1
Design, installation, configuration and updates
Installation and configuration of Oracle 11gR2 Real Application Cluster, and database administration
IBM WebSphere 6.1 as middle tier and Oracle Application Server 10g as middleware
Installation, configuration and administration of Oracle Application Server 10g
Applying 11g patches
Installation and configuration of 11gR2 Data Guard
Daily monitoring tasks
Database systems and Oracle Application Server Unix shell scripting. Monitoring web servers
Monitoring Oracle jobs (e.g. job failures etc. with Oracle Enterprise Manager 10g, Grid Control)
Monitoring server availability with Nagios
Monitoring alert_log (ORA errors) with shell scripts
Handling trace files
Designing warehouse management infrastructure
Collaborating with WebSphere integration, design team, managing integration with ERP
Executing qualification tests
Installing RF radio frequency
Creating documentation
Installation and configuration of Voice Console Server (Vocollect)

Oct 2009 - Dec 2009

3 months

Hamburg, Germany

Senior Oracle DBA

Kuehne & Nagel

Building RAC 11gR1 Real Application Cluster and Data Guard in three environments Hamburg, Hong Kong and New York with database on ASM in SAN
Tuning Oracle 10g, IBM WebSphere Application Server, Business Objects on Unix Linux 64bit Red Hat
The system includes multiple production, QA, test and development Oracle databases with applications for sea freight, air freight, contract logistics, customer solutions, road and rail logistics, insurance brokers, lead logistics, real estate and SAP systems
Design, installation, configuration and updates
Installation and configuration of Oracle 11gR1 Real Application Cluster and database administration
Applying 11g patches
Installation and configuration of 11gR1 Data Guard
Daily monitoring tasks
Monitoring Oracle jobs (e.g. job failures etc. with Oracle Enterprise Manager 10g, Grid Control)
Monitoring server availability with Nagios
Monitoring alert_log (ORA errors) with shell scripts
Handling trace files
Tuning, troubleshooting and optimization
Performing problem analysis
Troubleshooting
Changing Oracle internal parameters
Backup and recovery
Online backup with RMAN via TSM (Tivoli)
Restoring databases (datafiles, tablespaces, point-in-time recovery etc.)

Sep 2009 - Sep 2009

1 month

Siegburg, Germany

Oracle DBA

Civitec

Backup with RMAN via Networker, test and cross recovery with RMAN
Installation and configuration of SAP BRTOOLS and the related Networker module and backup with SAP BRTOOL
Recovery, cloning and duplication with RMAN
Installing Oracle patches, migration and upgrade from 10g

May 2009 - May 2009

1 month

Thayngen, Switzerland

Tuning and optimization of Oracle 10g

Rieker Schuh AG

Apr 2008 - Mar 2009

1 year

Munich, Germany

Senior Oracle & Apps DBA

Netma NATO

Administration and tuning of Oracle 8i, 9i, 10g, and 11g Oracle Applications 11 (11.5.10.2), EBS R12, and Oracle Application Server 10g in various Oracle projects on Unix environments (IBM AIX 5.3 HACMP cluster and Linux Enterprise 9) on SAN
The system includes production, QA, test, and development Oracle databases with Oracle Applications 11.5.10.2, custom applications, message handlers, Oracle 9i Dataguard, Oracle Applications (Oracle Financials, FA, HR, AP, GL, AR, OM modules), and Oracle Application Server 10g
Design, installation, configuration, and update
Installation and configuration of Oracle 8i and 9i databases, Oracle 10g Real Application Cluster and 11g, database creation (cloning), and database administration on Linux and AIX 5.3
Installation, configuration, and administration of Oracle Applications 11.5.10.2 on Linux ES9
Installation and configuration of Oracle Application Server 10g on Linux ES9 and AIX 5.3
Installation and configuration of BEA WebLogic 10g
Cloning of databases and Oracle Applications
Implementation, upgrade, and support of Oracle Applications modules (Oracle Financials, FA, HR, AP, GL, AR, OM, INV) and Apache Web Server as middle tier
Oracle Application Unix processes (Concurrent Manager, Workflow Manager, etc.)
Applying patches for 8i, 9i, 10g, and Oracle Applications family patches
Installation and configuration of Oracle Internet Directory with LDAP
Daily monitoring tasks
Database systems, Oracle Applications 11i with Unix shell scripting
Monitoring Oracle jobs (e.g. job failures) with Oracle Enterprise Manager 2.2 and Spotlight, Statspack, AWR
Monitoring server availability with Tivoli
Monitoring alert log (ORA errors) with shell scripts
Handling trace files
Tuning, troubleshooting, and optimization
Conducting problem analysis
Modifying Oracle internal parameters
Indexing tables
Migration
Migration from Oracle 9i to 10g in a Linux environment
Migration from 9i to 11g in an AIX environment
Backup and recovery
Regular schema exports and full exports with crontab
Online and offline backups with RMAN and Tivoli Storage Manager
Database recovery
Restoration of databases (datafiles, tablespaces, etc.)

Oct 2007 - Oct 2007

1 month

Munich, Germany

Implementation of Oracle 10g RAC

Langenscheidt

Installation and configuration of Oracle 10g RAC on Linux SLES10

Jul 2007 - Mar 2008

9 months

Munich, Germany

Senior Oracle DBA

Allianz AG

Administration and tuning of Oracle 10g RAC and 9i on Unix/Linux 64-bit, Sun Solaris (8, 9, 10 on multiple SunFire 15K and 10E), Veritas Cluster 4.0, AIX 5L 5.3 HACMP, and Windows 2003 across multiple nodes, including Oracle ASM storage
System administration of distributed database systems and replication
The system includes multiple production, QA, test, and development Oracle databases with applications like multi-terabyte data warehouses, insurance processing systems, SAP systems, customer relationship management (Siebel), banking applications, Oracle 10g Dataguard, IBM WebSphere, BEA WebLogic, and various internet and intranet applications
Oracle deployment and packaging
Design, installation, configuration, and update
Installation and configuration of Oracle 9i and 10g Real Application Cluster, Oracle 10g on Veritas Cluster 4.0, database creation (cloning), and database administration
Cloning of databases
Apache Web Server and WebSphere as middle tier
Applying patches for 9i, 10g, and Oracle Applications
Installation and configuration of Oracle 9i and 10g Dataguard
Installation and configuration of Oracle Application Server 10g
Installation and configuration of BEA WebLogic and WebLogic Portal
Daily monitoring tasks
Database systems, Oracle Application Server with Unix shell scripting; monitoring web servers
Monitoring Oracle jobs (e.g. job failures) with Oracle Enterprise Manager 2.2, Grid Control, Spotlight, and Tivoli Statspack
Monitoring server availability with Tivoli
Monitoring alert log (ORA errors) with shell scripts
Handling trace files
Tuning, troubleshooting, and optimization
Conducting problem analysis
Error resolution
Modifying Oracle internal parameters
Indexing tables
Backup and recovery
Online backups with RMAN
Veritas NetBackup
Database restoration (datafiles, tablespaces, point-in-time recovery, etc.)

Jul 2007 - Jul 2007

1 month

Innsbruck, Austria

Tuning and optimization of Oracle 10G

Jul 2007 - Jul 2007

1 month

Cologne, Germany

Implementation of Oracle 9i RAC

Bundesamt für den Zivildienst

Installation and configuration of Oracle 9i RAC on Linux 64-bit

Jun 2007 - Jun 2007

1 month

Munich, Germany

Tuning and optimization of Oracle 9i

BayernInvest

Jan 2007 - May 2007

5 months

Nuremberg, Germany

Senior Oracle & Sybase DBA

GFK AG

Administration and tuning of Oracle 10g in a Unix environment Linux 64bit and administration of Sybase ASE 12.5 & 15.0 (Solaris 10 on multiple SunFire 15K, 10K)
Sun HA Cluster 3, Oracle 10 RAC on multiple nodes and Oracle ASM storage system
Administration of distributed database systems and replication
The system includes multiple Oracle databases with applications for market research, an 800G data warehouse, and SAP systems
Design, installation, configuration, and upgrades
Installation and configuration of Oracle 10g Real Application Cluster databases on ASM storage system, database creation (cloning), and database administration
Installation of Sybase ASE 15.0
Installation and administration of EM Grid Control
Applying patches for Oracle 10g
Daily monitoring tasks
Database systems and Oracle Application Server Unix shell scripting
Monitoring Oracle jobs (e.g., job failures etc.) with Oracle Enterprise Manager 10.2.0.3, Grid Control
Monitoring server availability with Grid
Monitoring alert log (ORA errors) with shell scripts
Handling trace files
Monitoring Sybase servers with shell scripts
Tuning, troubleshooting, and optimization
Performing problem analysis
Modifying Oracle internal parameters
Indexing tables
Backup and recovery
Online backup with RMAN
Legato NetBackup
Recovery of databases
Restoring databases (datafile, tablespaces, point-in-time recovery, etc.)
Importing dumps into Sybase

Mar 2004 - Dec 2006

2 years 10 months

Munich, Germany

Senior Oracle DBA

T-Systems RZ

Administration and tuning of Oracle 8i, 9i, 10g and Oracle Application Server 9i and 10g SOA 10.1.3 in a Unix environment (Solaris 8, Solaris 10 on multiple SunFire 15K, 10K, Veritas HA Cluster 4.0, Veritas Volume Manager)
Administration of distributed database systems and replication for the Toll Collect toll project
The system includes multiple Oracle databases with applications for online bookings, satellite capture systems, BWS (SAP HUB Adapters), a data warehouse with Cognos Process, CRM Siebel, Oracle Advanced Queue, Oracle 9i Data Guard, Oracle OPS and 9i and 10g RAC, IAS 10g, SOA 10.1.3, J2EE and OC4J applications, as well as BEA WebLogic
Deployment and packaging of Oracle
Design, installation, configuration, and updates
Installation and configuration of Oracle 8i OPS databases, failover and 9i, Oracle 9i and 10g Real Application Clusters, Oracle 10g, database creation (cloning) and database administration
Oracle 8i and 9i on Sun systems with Solaris 2.8, 2.10
Database cloning
Oracle Application Server 10g, SOA 10.1.3, J2EE, OC4J, Ants
Deployment of OC4J, Apache Tomcat 5
Apache Web Server as middle tier
Applying patches to 8i, 9i, 10g Oracle Applications
Installation and configuration of Oracle 9i, 10g Data Guard
Installation and configuration of Oracle Application Server 10g
Daily monitoring tasks
Database systems and Unix shell scripting for Oracle Application Server
Monitoring Oracle jobs (e.g., job failures etc.) with Oracle Enterprise Manager 2.2, Grid Control and Spotlight, TeamQuest, SiteScope, Statspack
Troubleshooting errors
Monitoring server availability with Tivoli
Monitoring alert log (ORA errors) with shell scripts
Handling trace files
Monitoring, starting, and stopping Oracle AQ and SAP adapters
Tuning, troubleshooting, and optimization
Performing problem analysis
Modifying Oracle internal parameters
Indexing tables
Tuning Oracle Application Server (Apache, OC4J)
Backup and recovery
Online backup with RMAN
Veritas NetBackup
Recovery of databases
Restoring databases (datafile, tablespaces, point-in-time recovery, etc.)
Migration from Oracle 8i to 10g in a Sun Solaris environment

Oct 2003 - Feb 2004

5 months

Oracle DBA and reporting

Automotive Industry Supplier

Oracle consulting, administration, and tuning of Oracle 9i
Generating reports using Oracle Reports (Developer 6i)
Data consolidation using Oracle Discoverer
Environment: Designer/2000, Developer/2000, OracleiDS9i, Oracle 9i, PL/SQL, PowerBuilder, Sun Solaris 8.0

Jul 2002 - Sep 2003

1 year 3 months

Hanover, Germany

Oracle DBA

TUI InfoTec

Administration and tuning of Oracle 8i, 9i, and Oracle Applications 11i in various Oracle projects in a Unix environment (Solaris 8 on SunFire 15K with 13 domains)
Veritas HA Cluster 3
The system includes Oracle databases with Oracle Applications 11.5.7 and 11.5.8, a data warehouse with Cognos Process, customer relationship management (Siebel), MQ Series, BEA WebLogic, Oracle 9i Data Guard, Oracle 9i RAC, a yield management system, and Oracle Applications (Oracle Financials, FA, AP, GL, AR, OM modules)
Design, installation, configuration, and upgrades
Installation and configuration of Oracle 8i and 9i databases, Oracle 9i Real Application Cluster, database creation (cloning), and database administration
Installation, configuration, and administration of Oracle Applications 11.5.7 and 11.5.8
Oracle 8i and 9i on Sun systems with Solaris 2.8
Cloning databases and Oracle Applications
Implementation, upgrade, and support of Oracle Applications modules (Oracle Financials, FA, AP, GL, AR, OM, INV) and Oracle iProcurement
Apache Web Server as middle tier
Oracle Application Unix processes (Concurrent Manager, Workflow Manager, etc.)
Applying patches to 8i, 9i, Oracle Applications
Installation and configuration of Oracle 9i Data Guard
Installation and configuration of Oracle Internet Directory with LDAP
Daily monitoring tasks
Database systems and Oracle Applications 11i with Unix shell scripts
Monitoring Oracle jobs (e.g., job failures etc.) with Oracle Enterprise Manager 2.2 and Spotlight, Statspack
Monitoring server availability with Tivoli
Monitoring alert log (ORA errors) with shell scripts
Handling trace files
Monitoring, starting, and stopping MQ Series, BEA WebLogic
Tuning, troubleshooting, and optimization
Performing problem analysis
Modifying Oracle internal parameters
Indexing tables
Backup and recovery
Regular schema exports and full exports with cron
Online and offline backup with RMAN
BCV backups with TimeFinder, Veritas NetBackup, Tivoli Data Protection
Recovery of databases
Restoring databases (datafile, tablespaces, etc.)

Jul 2001 - Jun 2002

1 year

Germany

Oracle DBA

T-Systems

Administration and tuning of Oracle 7.3.4, 8.0.5, 8i, 9i in Unix environments (Sinix, NEC, HP-UX, Solaris 2.6, 2.7), Sun HA Cluster 2.2, 3.0, and on Windows NT
Administration of distributed database systems and replication for Deutsche Post AG
The system includes Oracle databases spread across 600 servers in different locations in Germany and some other European countries
Administration of Oracle with applications such as PC Franking (Stampit), PC Premium Letter, mail center, terabyte data warehouse with Informatica Process and PowerMart
Installation, administration, configuration and updates
Installation and configuration of Sun HA Cluster OS versions 2.2 and 3.0
Oracle 8i and Oracle 9i on Sun systems running Solaris 7 and Solaris 8
Installation and configuration of Oracle 8i standby database
Oracle 8.0.5 on Windows NT 4
Oracle 7.3.4 on Sinix RM400, RM600, Primenergy and NEC machines
Upgrade from Oracle 7.3.3 to 7.3.4 and 8i
Applying patches 7.3.4.4, 8.7.3.2
Daily monitoring tasks
Co-responsible for a replication environment (mail center) with 80 databases spread across Germany
Monitoring multiple Sun HA clusters, HP clusters and Sinix systems
Monitoring delayed and distributed database systems with Unix shell scripts (Oracle replication)
Monitoring Oracle jobs (user_jobs, e.g., job failures, etc.)
Monitoring server availability with the ITO tool
Monitoring alert logs with the Patrol tool
Monitoring error messages (ORA errors) with BMC Patrol
Handling trace files
Migration
Migration from Oracle 7 & 8 to Oracle 8i and 9i
Porting Oracle 8 from Windows NT to Sinix RM400 Unix environment
Tuning and optimization
Performing problem analysis
Changing Oracle internal parameters
Backup and recovery
Regular exports of schemas and full exports
Backing up with Networker
Recovering databases to a specific point in time
Recovering a schema to a specific point in time.

Dec 2000 - Jun 2001

7 months

Hamburg, Germany

Oracle DBA

Hamburgischen Elektrizitätswerken

Support for Oracle DBA tasks in various Oracle projects in a Unix environment (Solaris 6, 7, 8), SAN, Sun HA Cluster 2.2, and on Windows NT
The system includes Oracle databases with a data warehouse using Informatica Process and PowerMart, a billing system (Geneva), customer relationship management (Siebel), PeopleSoft, Hansenet ISP, Oracle Applications (Oracle Financials, OM, INV, AR, AP), distributed across 30 servers with more than 100 instances
Installation, configuration and updates
Installation, configuration and database creation of Oracle 8i (8.1.6 Release 2 and 3) on Windows NT
Oracle 8i on Sun systems with Solaris 2.6, 7, 8
Oracle 8.0.5 on Windows NT 4
Upgrade from Oracle 7.3.4 to 8i
Applying patches for 8i
SAP/Oracle interface
Implementation, database creation (8.1.7) of billing applications (Geneva) for Hansenet
Daily monitoring tasks
Database systems with Unix shell scripts
Monitoring Oracle jobs (e.g., job failures) with Oracle Enterprise Manager 2.2
Monitoring server availability with OEM
Monitoring alert logs (ORA errors) with OEM
Handling trace files
Migration
Migration from Oracle 7 & 8i to Oracle 8i (data warehouse, PeopleSoft, Siebel, Geneva, etc.)
Porting Oracle 8 from Windows NT to Solaris Unix environment
Tuning, troubleshooting and optimization
Performing problem analysis
Changing Oracle internal parameters
Backup and recovery
Regular exports of schemas and full exports
Online and offline backups with RMAN and IBM ADSM (Tivoli)
Database recovery
Restoring databases (datafiles, tablespaces, etc.)

Jan 2000 - Nov 2000

11 months

Germany

Oracle DBA

Deutsche Post AG

Administration and tuning of Oracle 7.3.4, 8.0.5, 8i in Unix environments (Sinix, NEC, HP-UX, Solaris 2.6) and on Windows NT
Administration of distributed database systems and replication
The system includes Oracle databases spread across 600 servers in different locations in Germany and some other European countries. Responsible for 160 of these servers in a team of 4 Oracle DBAs
Installation, configuration and updates
Installation and configuration of the operating system on HP-UX
Setting up volumes and mirroring disks on Sinix
Installation, configuration and database creation of Oracle 8i (8.1.6 Release 2) on HP-UX machines
Oracle 8i on a Sun system running Solaris 7
Oracle 8.0.5 on Windows NT 4
Oracle 7.3.4 on Sinix R400, R600 and NEC machines
Upgrade from Oracle 7.3.3 to 7.3.4
Applying patches 7.3.4.4
SAP/Oracle interface
Daily monitoring tasks
Co-responsible for a replication environment (fleet management) with 80 databases spread across Germany as well as in Warsaw and Linz
Monitoring delayed and distributed database systems with Unix shell scripts
Monitoring Oracle jobs (user_jobs, e.g., job failures, etc.)
Monitoring server availability with the ITO tool
Monitoring alert logs with the Patrol tool
Monitoring error messages (ORA errors) with BMC Patrol
Handling trace files
Migration
Migration from Oracle 7 & 8 to Oracle 8i
Porting Oracle 8 from Windows NT to Sinix R400 Unix environment
Tuning and optimization
Performing problem analysis
Changing Oracle internal parameters
Backup and recovery
Regular exports of schemas and full exports
Backups with Networker
Recovering databases to a specific point in time
Recovering a schema to a specific point in time.

Jun 1999 - Dec 1999

7 months

Informix Database/Oracle DBA

FJA Feilmeyer & Junker AG

Supporting implementation tasks in the admin and inventory system in the BHW VWS2 project on an Informix Database Server 7.3 running on Sinix
Client companies: BHW Lebensversicherung AG and BHW Bausparkasse AG
Development of ESQL, PL/SQL, SQL scripts and UNIX shell scripts
Fixing errors caused by migration
Creating new applications - interfaces - performance statistics
Conducting system analysis

Apr 1999 - Jun 1999

3 months

Bremen, Germany

Oracle DBA

Bremer Entsorgungsbetriebe

Administration and tuning of Oracle 7.3.4

Nov 1998 - Apr 1999

6 months

Reports and Data Consolidation

Kraft-Jacobs-Suchard

Generating reports with Oracle Report
Consolidating data using Oracle Discoverer
Participated in Y2K Year 2000 testing
Created interface documentation in the Oracle Data Warehouse
Created and edited SPL using Oracle 7 on RS6000 in conjunction with Oracle Express Server 6.2
Monthly reports for the Kraft-Jacobs-Suchard group
Outputting reports in HTML format
Writing PL/SQL and SQL scripts

Sep 1998 - Sep 1998

1 month

Internet Development

Developed an internet search engine with an MSQL database connection in a Unix environment
Programmed the search engine, created the MSQL database, and designed input, delete, and update forms using HTML, CGI, and Perl

May 1998 - Sep 1998

5 months

Client/Server Application

Online transaction processing to support the inventory management and order system
Supported the processing of approximately 10,000 orders, 3,800 customers, 7,700 addresses, 10,000 items, and 10,000 quotes per year
Created a UI prototype
Designed and implemented the data model
Implemented the application
Created user documentation
Installed the application
Trained staff
Implemented on Windows 3.1 using MS Visual Basic 5.0 as the frontend and MS SQL Server 6.5 on Windows NT 4.0

May 1998 - Jun 1998

2 months

Helpdesk Application

Bremer Entsorgungsbetriebe

Application to support the internal helpdesk system at Bremer Entsorgungsbetriebe
Created a UI prototype
Designed and implemented the data model
Implemented the application
Created user documentation
Installed the application
Trained staff
Implemented on Windows 3.1 using MS Access 2.0

Nov 1997 - Apr 1998

6 months

Bremen, Germany

Client/Server Application

IT application to support customer consulting on property drainage issues in the state of Bremen
Supported management of customer master data, property master data, technical detail information, and consulting processes
Mail merge functions and protocol printout
Created a UI prototype
Designed and implemented the data model
Implemented the application
Created user documentation
Installed the application
Trained staff
Installed and configured Oracle 7.3.4
Implemented on Windows 3.1 using MS Access 2.0 as the frontend and Oracle 7.3.4 as the database server on Windows NT 4.0

Aug 1997 - Jan 1998

6 months

Client/Server Application

Bremer Entsorgungsbetriebe

IT application for time sheet entry for wage earners and employees
Set up Bremer Entsorgungsbetriebe's in-house payroll system (SAP software)
Concurrent access by over 40 time sheet clerks
Created a UI prototype
Designed and implemented the data model
Implemented the application
Created user documentation
Installed and configured Oracle 7.3.4
Installed the application
Trained employees
Created installation disks using MS Access Development Tool
Implemented on Windows 3.1 with MS Access 2.0 as front end and Oracle 7 as database server

May 1997 - Dec 1997

8 months

Standalone Application

Eberhard Brühl Verlade- und Transportsysteme

Online transaction process to support order and purchasing management
Database application to support quote and order processing
Created a UI prototype
Designed and implemented the data model
Implemented the application
Created user documentation
Installed the application
Trained employees
Created installation disks using MS Access Development Tool
Implemented on Windows 3.1 using MS Access 2.0 database

Jan 1997 - Apr 1997

4 months

Standalone Application

Database of all treatment and recycling facilities in Germany
Consolidation of all treatment and recycling facilities for selection by waste types and criteria
Created a UI prototype
Designed and implemented the data model
Implemented the application
Created user documentation
Installed the application
Trained employees
Implemented on Windows 95 using MS Access 2.0 database

Nov 1996 - Apr 1997

6 months

Bremen, Germany

File/Server Application

Database for customer management, calculation of sewer construction and connection fees, late payment surcharges, deferral interest and wastewater consumption for the city of Bremen
File/Server application with concurrent access by multiple employees
Created a UI prototype
Designed and implemented the data model
Implemented the application
Created user documentation
Installed the application
Trained employees

Nov 1996 - Aug 1997

10 months

Diepholz, Germany

Client/Server Application

Database for customer and appointment management of oil and petrol separator disposal in Diepholz district, Lower Saxony
Created a UI prototype
Designed and implemented the data model
Implemented the application
Created user documentation
Installed the application
Installed and configured MSSQL Server 6.5
Trained employees
Implemented as a client/server application using MS Access 7.0 as front end and MSSQL 6.5 as back end on Windows NT Server 4.0

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Government and Administration, Healthcare, Transportation, Pharmaceutical, and Insurance.

Information Technology

Government and Administration

Healthcare

Transportation

Pharmaceutical

Insurance

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Business Intelligence, Operations, Supply Chain Management, Human Resources, and Procurement.

Information Technology

Business Intelligence

Operations

Supply Chain Management

Human Resources

Procurement

Skills

Self-employed Since 1996, Engineering Office For Software Development, Software Engineering, Development Of Custom Databases (Oracle 7x And Oracle 8, 8i, 9i, 10g, 11g, 12c And 19c Server Computing, Internet And Intranet, Msql, Mysql, Adabas, Informix 7.3, Db2 Udb 8)
Programming: Visual Basic Application, Vbscript, Pl/sql, Java, Javascript, Perl, Shell Scripting, Cgi, C++, Oracle Pl/sql
Web Servers: Oracle Webserver, Oracle Webdb, Oracle9ias, Oracle Ias 10g Release 2, Soa Oracle Application Server, Oracle Fusion Middleware 11g & 12c, Obia, Apache Web Server 2.4.2, Iis, Apache Tomcat 7
Database Administration: Administration Of Oracle 7 & 8, 8i, 9i, 10g, 11g, 12c And 19c Under Oracle Parallel Server 8i, Real Application Clusters 9i, 10g, 11g, Oracle Grid Computing, 19c Rac
Operating Systems: Windows Nt 4.0, 2003, 2008, 2012 Server, Xp Professional; Unix Sun Solaris 8, 9, 10 & 11; Hp-ux 10.x; Aix 5.3; Sinix; Nec; Linux Red Hat 6, 7, 8 And Suse Sles 9, 10, 11 & 12
Databases And Applications: Oracle 7x, Oracle 8, 8i, 9i Rac, 10g, 10g Rac, 11g Rac, 12c Rac With Asm, 18c, 19c Rac, Oracle E-business Suite 11i And R12 (Oracle Financials, Fa, Ap, Gl, Ar, Om Modules), Informix 7.3, Db2 Udb 8, Microsoft Sql Server 6.5, 7.0, 2000, 2003, 2008
Networks/communication: Tcp/ip, Nis, Dns, Dhcp, Ldap, San
Software Packages/methodologies/tools: Oracle Developer 2000, 10g; Oracle Designer 2000, 10g; Discoverer 3.0, 10g; Oracle9 Ids; Oracle Express Server, Olap And Oracle Express Objects; Cognos Suite; Powermart Suite; Bea Weblogic; Oracle Fusion Middleware 11g & 12c, 14c; Tivoli Data Protection; Big Brother; Rman; Bcv Timefinder; Veritas Cluster 5.0; Veritas Volume Manager; Bmc Patrol; Hp Openview; Hp Service Center; Itsm Remedy; Ibm Maximo; Ito; Crm Siebel; Microsoft Visual Studio 97, Visual Studio 6.0; Ms Office Professional And Office Development Tools
Hardware & Operating Systems: Sf15k, E10k, Siemens Rm600, Rm400; Nec, Compaq, Fujitsu, Aix, Hp, Linux Red Hat 5.3, 6.2, 7.5, 8 And Suse Sle 10, 11 & 12; Sun Solaris Sparc 5.6 To 5.11
Industries: Banking And Insurance, Service Providers, Pharmaceutical Industry, Manufacturing And Trade, Public Sector, Transport And Logistics, Energy Suppliers, Tourism

Languages

German

Native

English

Advanced

Education

Economics

Aachen University of Applied Sciences

Diploma in Engineering · Process Engineering · Aachen, Germany

Statistics

Experience

Total positions 35

Experience in Information Technology 18.5 y

Avg length 10 m

Longest experience 9 y

Global Experience

Countries worked in 3 (Germany, Switzerland, Austria)

Primary country Germany

Expertise

Recent roles Senior Oracle DBA and WebLogic Administrator, Oracle Business Intelligence for Applications, Senior Oracle DBA, WebLogic Administrator, Oracle Business Intelligence for Applications, Senior Oracle DBA

Main industries Information Technology, Government and Administration, Healthcare

Main business areas Information Technology, Business Intelligence, Operations

Qualifications

Highest degree Master

Profile

Created

April 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Christopher based?

Christopher is based in Eschborn, Germany.

What languages does Christopher speak?

Christopher speaks the following languages: German (Native), English (Advanced).

How many years of experience does Christopher have?

Christopher has at least 28 years of experience. During this time, Christopher has worked in at least 19 different roles and for 24 different companies. The average length of individual experience is 1 year and 10 months. Note that Christopher may not have shared all experience and actually has more experience.

What roles would Christopher be best suited for?

Based on recent experience, Christopher would be well-suited for roles such as: Senior Oracle DBA and WebLogic Administrator, Oracle Business Intelligence for Applications, Senior Oracle DBA, WebLogic Administrator, Oracle Business Intelligence for Applications, Senior Oracle DBA.

What is Christopher's latest experience?

Christopher's most recent position is Senior Oracle DBA and WebLogic Administrator, Oracle Business Intelligence for Applications.

What companies has Christopher worked for in recent years?

In recent years, Christopher has worked for Informationstechnikzentrum Bund (ITZ Bund).

Which industries is Christopher most experienced in?

Christopher is most experienced in industries like Information Technology, Government and Administration, and Healthcare. Christopher also has some experience in Pharmaceutical, Transportation, and Insurance.

Which business areas is Christopher most experienced in?

Christopher is most experienced in business areas like Information Technology, Business Intelligence, and Operations. Christopher also has some experience in Supply Chain Management, Procurement, and Sales.

Which industries has Christopher worked in recently?

Christopher has recently worked in industries like Information Technology and Government and Administration.

Which business areas has Christopher worked in recently?

Christopher has recently worked in business areas like Business Intelligence, Information Technology, and Operations.

What is Christopher's education?

Christopher holds a Master in Process Engineering from Aachen University of Applied Sciences.

What is the availability of Christopher?

Christopher will be available full-time from May 2026.

What is the rate of Christopher?

Christopher's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

How to hire Christopher?

To hire Christopher, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

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Market avg: 968-1128 €

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Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

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