Difference between Clustered and Non-clustered index

link Difference between Clustered and Non-clustered index (guru99.com)

Modify the owner of the tables and the sequences (post migration)

Modify the owner of the tables and the sequences (post migration) 




#change table owner
for tbl in `psql -h $SERVER$DOMAIN -p $PORT -U <dbauser> -qAt -c "select tablename from pg_tables where schemaname = '<your_schema>';" <database>` ; do  psql -h $SERVER$DOMAIN -p $PORT -U <dbauser> -c "alter table "$tbl" owner to <your_role>" <database>; done

#change sequence owner
for tbl in `psql -h $SERVER$DOMAIN -p $PORT -U <dbauser> -qAt -c "select sequence_name from information_schema.sequences where sequence_schema = '<your_schema>';" <database>` ; do  psql -h $SERVER$DOMAIN -p $PORT -U <dbauser> -c "alter sequence "$tbl" owner to <your_role>" <database>; done

[SYSTEM]

This script uses the local tnsnames.ora file to create a connection, and requires the variable ${p} to hold the current SYSTEM password.

Status instance postgres

POSTGRES_IS_RUNNING=$(export PGPASSWORD=${PG_PWD}; psql --host=${MACH_DEST} --port=${PORT} --user=${PG_USER} --dbname=postgres --quiet --tuples-only --no-psqlrc --command "SELECT 1;" 2>/dev/null)




INSTANCE_STATUS=$(export PGPASSWORD=${PG_PWD}; psql --host=${MACH_DEST} --port=${PORT} --user=${PG_USER} --dbname=postgres --quiet --tuples-only --no-psqlrc --command="SELECT CASE pg_is_in_recovery() WHEN true THEN 'IN RECOVERY' ELSE 'OPEN' END;" 2>/dev/null)

Calcul de stats postgreSQL

$PGHOME/bin/vacuumdb --port=$PORT --username=$PG_USER --analyze-only --verbose --jobs=$NB_JOBS $PG_DATABASE" 2>&1

Ora2PG script creation project

#!/bin/sh
#-------------------------------------------------------------------------------
#
# Script to create an ora2pg project
# Author : JJY
#
#-------------------------------------------------------------------------------
#set -vx
clear
echo " "
echo " Welcome in the program to create a migration project. "
echo " "
echo " Write the working environment (dev/qa/prd) :"
echo " "
read env
echo " "
echo " Write the name of your asset :"
echo " "
read base
echo " "
mkdir -p $ORA2PG_HOME/$env
ora2pg --project_base $ORA2PG_HOME/$env --init_project $base -c $ORA2PG_CONF
#cp $ORA2PG_HOME/config/commonstruct.conf $ORA2PG_HOME/$env/$base/config/metadata_ora2pg.conf
#cp $ORA2PG_HOME/config/commondata.conf $ORA2PG_HOME/$env/$base/config/data_ora2pg.conf
echo " "
echo " !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
echo " Working environment created for $base: $ORA2PG_HOME/$env/$base"
echo " !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
echo " "
echo " !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
echo " The file  $ORA2PG_HOME/$env/$base/config/metadata_ora2pg.conf         "
echo " and  $ORA2PG_HOME/$env/$base/config/data_ora2pg.conf have to be fixed."
echo " !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

exit 0

DEPLOY HA postgres

deploy_HA.txt

About JSON in RDBMS

2 links :

JSONB PostgreSQL: How To Store & Index JSON Data (scalegrid.io)

PostgreSQL JSON Tutorial (postgresqltutorial.com)

Désactiver le mode visual sur VI

J'ai remarqué un truc bien chiant sur les nouvelles VM linux : le clic droit de la souris ne peut plus coller...!

pour y remédier :

echo "set compatible" > ~/.vimrc
echo "set mouse-=a" >> ~/.vimrc

PG_BADGER

pgbadger -j 4 --outfile $HOME/rapport_complet.html -f stderr -p '%t:%r:%u@%d:[%p]:' /pglog/postgresql-2021-09-10_000000.log