2026-03-12 21:01:38

tiddlywiki/PDB - divers.txt

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+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~ configurable spfile parameters
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+COLUMN name FORMAT A35
+COLUMN value FORMAT A35
+ 
+SELECT name, value
+FROM   v$system_parameter
+WHERE  ispdb_modifiable = 'TRUE'
+ORDER BY name;
+
+~~~~~~~~~~~~~~~~~~
+~~ Rename of a PDB
+~~~~~~~~~~~~~~~~~~
+~~ rename PDB database from JABBAPRD to ZAX
+alter pluggable database JABBAPRD close immediate;
+alter pluggable database JABBAPRD open restricted;
+alter session set container=JABBAPRD;
+alter pluggable database rename global_name to ZAX;
+alter pluggable database ZAX close immediate;
+alter pluggable database ZAX open;
+alter pluggable database ZAX save state;
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~ Switch a CDB in LOCAL_UNDO mode
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+~~ check if LOCAL_UNDO is enable
+COLUMN property_name FORMAT A30
+COLUMN property_value FORMAT A30
+
+SELECT property_name, property_value
+FROM   database_properties
+WHERE  property_name = 'LOCAL_UNDO_ENABLED';
+
+
+
+~~ disable cluster_database and stop the database
+alter system set cluster_database=false scope=spfile sid='*';
+srvctl stop database -db HUTTPRD
+
+~~ start just one instance in upgrade mode 
+startup upgrade;
+~~ enable LOCAL_UNDO
+alter database local undo ON;
+
+~~ enable cluster_database and start the database
+alter system set cluster_database=true scope=spfile sid='*';
+
+~~ stop the instance and start database
+srvctl start database -db HUTTPRD
+
+~~~~~~~~~~~~~~~~~~
+~~ Refreshable PDB
+~~~~~~~~~~~~~~~~~~
+
+~~ context
+~~ source ZAX@HUTTPRD(on vortex-scan)
+~~ target HARRA@BOTHAN(on kessel-scan)
+
+~~ on source HUTTPRD
+CREATE USER c##kaminoan IDENTIFIED BY secret CONTAINER=ALL;
+GRANT CREATE SESSION, CREATE PLUGGABLE DATABASE TO c##kaminoan CONTAINER=ALL;
+
+~~ on target BOTHAN
+CREATE DATABASE LINK kaminoan_link
+  CONNECT TO c##kaminoan IDENTIFIED BY secret USING 'vortex-scan/HUTTPRD';
+
+select * from dual@kaminoan_link;
+
+create pluggable database HARRA from ZAX@kaminoan_link parallel 2 refresh mode manual;
+alter pluggable database HARRA open read only instances=ALL;
+
+SELECT status, refresh_mode FROM  dba_pdbs WHERE pdb_name = 'HARRA';
+
+~~ to perform a refresh
+alter pluggable database HARRA close immediate instances=ALL;
+alter pluggable database HARRA refresh;
+alter pluggable database HARRA open read only instances=ALL;
+
+
+