Author: techfox9
Oracle basic info ..
Thursday, March 2nd, 2006 @ 1:55 am
sqlplus user@db/password
- Execute a script from sqlplus
@[/path/]script.sql - List schemas:
SELECT username FROM all_users ORDER BY username; - List tables in a schema:
SELECT object_name, created FROM user_objects WHERE object_type=’TABLE’; - Get number of rows
SELECT COUNT(*) FROM table; - Show table schema
DESC table; - Limit number of rows
SELECT * FROM table WHERE rownum < N; - Get current datetime
SELECT to_char(sysdate, ‘mm/dd/yyyy hh:mi:ss’) FROM dual;
See http://www.oracle.com/technology/oramag/code/tips2004/011104.html for
a procedure to list table names and number of rows.
See http://www-it.desy.de/systems/services/databases/oracle/sqlplus/sqlplus.html.en
for an introduction to sqlplus.
Objects and resources:
http://www-it.desy.de/systems/services/databases/oracle/at_desy/user_objects.html.en