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Basically, a web session can be defined as the timeframe in which a visitor navigates your web site.

XPath is a language for addressing parts of an XML document. It is designed to be used by XSLT and XPointer.

Basically, a web session can be defined as the timeframe in which a visitor navigates your web site.

PostgreSQL

Home >PostgreSQL > PostgreSQL determine database uptime

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To determine when database has been start up:

postgres=#  select pg_postmaster_start_time();
   pg_postmaster_start_time    
-------------------------------
 2012-03-04 14:53:20.889366+00
(1 row)

To determine how long is up:

postgres=# SELECT date_trunc('second',current_timestamp - pg_postmaster_start_time())  db_uptime;
    db_uptime     
------------------
 68 days 19:31:12
(1 row)

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Tutorial

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A good scientist is a person with original ideas.
A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering.
Freeman Dyson

Oracle... Definizioni: Area PGA

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