May 17, 2026, 11:40 PM

inbox/DataBase/PostgreSQL/tablespace/tbsp_info.sql

@@ -0,0 +1,28 @@
+VIEW TABLESPACE INFO IN POSTGRES:
+
+ 
+
+postgres=# select * from pg_tablespace;
+
+(OR)
+
+postgres=# \db+
+
+(or)
+
+-- For getting size of specific tablespace:
+
+postgres=# select pg_size_pretty(pg_tablespace_size('ts_dbaclass'));
+
+pg_size_pretty
+
+----------------
+
+96 bytes
+
+(1 row)
+
+Pre-configured tablespaces:( these are default tablespaces)
+
+Pg_global - > PGDATA/global - > used for cluster wide table and system catalog
+Pg_default - > PGDATA/base directory - > it stores databases and relations

inbox/DataBase/PostgreSQL/tablespace/tbsp_mgmt.sql

@@ -0,0 +1,16 @@
+CREATE TABLESPACE:
+postgres=# create tablespace ts_postgres location '/Library/PostgreSQL/TEST/TS_POSTGRES';
+CREATE TABLESPACE
+
+RENAME TABLESPACE:
+postgres=# alter tablespace ts_postgres rename to ts_dbaclass;
+ALTER TABLESPACE
+
+DROP TABLESPACE:
+
+postgres=# drop tablespace ts_dbaclass;
+DROP TABLESPACE
+
+ 
+
+<<Before dropping tablespace make sure it is emptry>>

inbox/DataBase/PostgreSQL/tablespace/tbsp_show.sql

@@ -0,0 +1,36 @@
+postgres=# show default_tablespace;
+default_tablespace
+--------------------
+
+(1 row)
+<<<< If output is blank means default is pg_default tablespace>>>>>
+
+--To change the default tablespace at database level:
+
+postgres=# alter system set default_tablespace=ts_postgres;
+ALTER SYSTEM
+
+postgres=# select pg_reload_conf();
+pg_reload_conf
+----------------
+t
+(1 row)
+
+postgres=# show default_tablespace;
+default_tablespace
+--------------------
+ts_postgres
+(1 row)
+
+postgres=# SELECT name, setting FROM pg_settings where name='default_tablespace';
+name | setting
+--------------------+-------------
+default_tablespace | ts_postgres
+(1 row)
+
+ 
+
+Steps to change default tablespace at session level:
+
+postgres=# set default_tablespace=ts_postgres;
+SET

inbox/DataBase/PostgreSQL/tablespace/tbsp_view.sql

@@ -0,0 +1,74 @@
+VIEW DEFAULT TEMP TABLESPACE:
+dbaclass=# SELECT name, setting FROM pg_settings where name='temp_tablespaces';
+name | setting
+------------------+---------
+temp_tablespaces |
+(1 row)
+
+dbaclass=# show temp_tablespaces
+dbaclass-# ;
+temp_tablespaces
+------------------
+
+(1 row)
+
+CHANGE DEFAULT TEMP TABLESPACE
+
+postgres=# alter system set temp_tablespaces=TS_TEMP;
+ALTER SYSTEM
+
+postgres=# select pg_reload_conf();
+pg_reload_conf
+----------------
+t
+(1 row)
+
+postgres=# show temp_tablespaces;
+temp_tablespaces
+------------------
+ts_temp
+(1 row)
+
+postgres=# SELECT name, setting FROM pg_settings where name='temp_tablespaces';
+name | setting
+------------------+---------
+temp_tablespaces | ts_temp
+(1 row)
+
+
+VIEW DEFAULT TEMP TABLESPACE:
+dbaclass=# SELECT name, setting FROM pg_settings where name='temp_tablespaces';
+name | setting
+------------------+---------
+temp_tablespaces |
+(1 row)
+
+dbaclass=# show temp_tablespaces
+dbaclass-# ;
+temp_tablespaces
+------------------
+
+(1 row)
+
+CHANGE DEFAULT TEMP TABLESPACE
+
+postgres=# alter system set temp_tablespaces=TS_TEMP;
+ALTER SYSTEM
+
+postgres=# select pg_reload_conf();
+pg_reload_conf
+----------------
+t
+(1 row)
+
+postgres=# show temp_tablespaces;
+temp_tablespaces
+------------------
+ts_temp
+(1 row)
+
+postgres=# SELECT name, setting FROM pg_settings where name='temp_tablespaces';
+name | setting
+------------------+---------
+temp_tablespaces | ts_temp
+(1 row)