Auteur/autrice : admin
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Measuring Storage Performance For Oracle Systems
ORACLE DATABASE LOAD TESTING TOOLS – OVERVIEW Benchmarking Oracle I/O Performance with Orion by Alex Gorbachev Miladin Modrakovic’s Blog: Oraclue Measuring Storage Performance For Oracle Systems
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Oracle VMs
Big Data : http://www.oracle.com/technetwork/database/bigdata-appliance/oracle-bigdatalite-2104726.html Developer : http://www.oracle.com/technetwork/database/enterprise-edition/databaseappdev-vm-161299.html Vms Template oracle 12c: http://www.oracle.com/technetwork/server-storage/vm/database-templates-12c-11gr2-1972804.html
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Difference entre shrink et coalesce??
Coalesce will just do a reorganization on the existing data, in place and leave any fully free blocks it created belonging to the index – it does not release it, […]
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How to pick up free extent in Oracle??
Pour récupérer l’espace libre d’une table, on peut utiliser : TRUNCATE table_toto DROP STORAGEou ALTER TABLE table_toto DEALLOCATE UNUSED Avant tout il faut connaitre quel table contient des trous […]
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Méthode de réplication MySQL dite « de snapshot »
Cette méthode est celle utilisée par Percona : 1) Connect to MySQL and run FLUSH TABLES WITH READ LOCKNote – this command may take a while to complete if you […]
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[Postgresql] Change the owner of the tables
$ psql -qAt -d mydatabase -c « SELECT ‘ALTER TABLE ‘||schemaname||’.’||tablename||’ OWNER TO new_owner;’ FROM pg_tables WHERE schemaname = ‘myschema' » > data.txt $ psql < data.txt -d mydatabase source […]
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Pgbouncer [postgres]
Installer pgbouncer , configurer le .ini : cat /etc/pgbouncer/pgbouncer.ini [databases]<aliasBDD> = dbname=test user=pg_test port=5433 pool_size=48 [pgbouncer]logfile = /var/log/pgbouncer/pgbouncer.logpidfile = /var/run/pgbouncer/pgbouncer.pidauth_file = /etc/pgbouncer/userlist.txtlisten_addr = <hostname>-pgblisten_port = 5432auth_type = trustadmin_users = […]
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[MYSQL] Explain requetes lentes ?
A quoi ça sert de faire un explain sur une requete lente? Alors pour info dans une requête quand tu ne mets pas les simples quotes sur les types […]