Tag: Oracle

Community

Find duplicate queries

By Dilbagh Singh – Users sometimes submit queries through an application multiple times, especially in environments where they are not in a position to maintain/manage the queries they submit. This takes up resources (i.e., temp space, CPU, IO, etc) and causes performance degradation for all users.

Community

Problems with the DUAL table

By Harish Kapgate – DUAL is a table automatically created by Oracle along with the data dictionary. It is in the schema of the user SYS, but is accessible by the name DUAL to all users. It has one column, DUMMY, defined to be VARCHAR2(1), and contains one row with a value ‘X’. Selecting from the DUA

Community

Display Session Information

by Jayant Kulkarni – Displaying session information is a regular task for a DBA. DBAs have been using information from v$session and v$process to find out relevant information about a process in order to kill a session, such as finding the UNIX id associated with the process, identifying more detail

Community

Secure import/export user

By Ed Schalk – This tip is designed to increase the security of imports/exports during batch processing of backups. It avoids the security problem of putting passwords in script files for privileged users (such as system). This tip has been tested on Oracle 7.3.3, 8.0.5 and 8.1.6.

Community

Oracle to Microsoft: Exchange This!

By John Taschek – Oracle launched a vicious attack on Microsoft’s Exchange at the recent OpenWorld conference. But Exchange is both too easy and too slippery a target: No matter how many viruses, security alerts, maintenance issues or general complaints come in, Exchange is still the most popular en