sqlplus

Automatic column formatting in Oracle sqlplus

Column formatting was always a pain in sqlplus when writing queries on the prompt. Most people use tools like SQL Developer or Quest TOAD which can scroll horizontally when running queries against a database, but as a consultant you are(…)

ARRAYSIZE or ROWPREFETCH in sqlplus?

ARRAYSIZE or ROWPREFETCH in sqlplus? What is the difference between the well known sqlplus-setting arraysize and the new sqlplus-12.2.-feature rowprefetch? In Blog https://www.dbi-services.com/blog/oracle-fasttrue-in-sqlplus-some-thoughts-about-rowprefetch/ I showed a case, which helps to reduce the logical IOs when(…)

Oracle FAST=TRUE in sqlplus? Some thoughts about rowprefetch

During my time as a Consultant working on Tuning Tasks I had the feeling that many people think that there is an Oracle-parameter “FAST=TRUE” to speed up the performance and throughput of the database calls. Unfortunately such a parameter is(…)

Useful Linux commands for an Oracle DBA

Introduction Oracle & Linux is a great duet. Very powerfull, very scriptable. Here are several commands that make my life easier. These tools seems to be widespread on most of the Linux distributions. watch with diff It’s my favorite tool(…)

sqlplus and its column output

During tuning or normal DBA activities one of the most annoying things is sqlplus with its default column output when running queries. I.e. even after setting a linesize of 1000 and a pagesize of 1000 the output may look as(…)

Oracle 12cR2: changes for login.sql

By Franck Pachot . If you use a login.sql script to set the SQL*Plus environment from your current working directory, you will see that it will not run anymore in 12.2. This is a security feature, and a good occasion(…)

12cR2 has new SQL*Plus features

By Franck Pachot . 12cR2 is there. What's new in SQL*Plus? For sure, you can't expect lot of things from it. The new command line is the SQL*Developer sqlcl which aims to be 100% compatible with SQL*Plus with lot of(…)