post from palindnilap

I just answered a question about the data dictionary on It is all about the dictionary views. How many tables should I know in the dictionary ? SQL> select count(*) from dict; 1857 Well, that’s too much. But I can remove the GV$ view, which contain the instance for RAC, and the DBA_ ALL_ […]

oracle voyage worm

I wrote a mini script to protect my customer from being attacked by an “oracle voyage worm” variant : revoke CREATE DATABASE LINK from CONNECT; revoke ALL on SYS.UTL_FILE from PUBLIC; revoke ALL on SYS.UTL_HTTP from PUBLIC; revoke ALL on SYS.UTL_SMTP from PUBLIC; revoke ALL on SYS.UTL_TCP from PUBLIC; grant EXECUTE on SYS.UTL_FILE to XDB; […]

Details regarding the 10g DBA OCM requirements will be available in December

Well, when 10g certification came out, it said : “will be available in late 2004”. In March 2005, I contacted Oracle University in Germany. They said : keep watching Later, it said : “will be available in mid 2005”. In Open World, I met the certification principal, who meant it will start in December […]


what is a hierarchy? I enjoy reading the wikipedia definition : In the doc the hierarchy is as a parent-child connection, CONNECT BY PRIOR defines the relationship. However, it is possible to have under certain circumstances to connect to a child, regardsless of the parent. This is no longer a practical relation. Sterile variant […]