This is a compilation of my professional skills.

Grades:
(1) … very good knowledge
(2) … good knowledge
(3) … basic knowledge

Databases
(1) Oracle 8i-19c (Certified Master)
(3) MySQL
(3) PostgreSQL

Oracle Technologies
(1) SQL*Net
(1) Oracle Enterprise Manager
(1) Real Application Clusters (Certified Expert)
(1) DataGuard
(2) Replication with Oracle Streams
(3) Oracle Transparent Gateways
(1) Backup/Recovery RMAN
(1) Performance Management
(2) PL/SQL
(1) SQL
(3) APEX
(1) Oracle on Linux (Certified Expert)
(2) Data Warehousing
(2) Partitioning
(1) Utilities (imp/exp, impd/expdp, sqlldr)
(2) Oracle Resource Manager

Operating Systems
(1) Linux (SLES, RHEL, OEL, CentOS, Debian)
(2) HP-UX
(2) Solaris
(3) Windows

Networking
(2) TCP/IP
(2) ARP, DNS, http, FTP, dhcp, SSH
(2) Routing, Switching

Others
(2) Apache
(2) Perl
(2) Python
(2) PHP, HTML
(2) tcpdump
(2) Shell-Scripting (bash/ksh)
(3) Siebel
(3) Serena Dimensions ChangeMan
(3) CVS
(2) MS-Office
(2) BMC Patrol
(3) Tivoli Storage Manager (TSM)
(3) HP Data Protector
(4) Veeam Backup and Recovery