1. Administrare Oracle 9i Suport de curs
January 11, 2019

2. Administrare Oracle II
Ziua 4
Administrare Oracle II
January 11, 2019

3. Administrare Oracle 9i Administrare Tablespaceuri
Tipuri Tablespace:
Date - Permanente
Temporare – Folosite pentru sortari si alte obiecte temporare
UNDO – pentru managementul spatiului undo sau rollback
- Un tablespace contine mai multe obiecte din baza de date si poate fi compus din mai multe fisiere pe disk.
January 11, 2019

4. Administrare Oracle 9i Administrare Tablespaceuri
January 11, 2019

5. Administrare Oracle 9i Administrare Tablespaceuri
Tipuri Tablespace:
Managementul Extenturilor prin Dictionar. (Metadata).
Managementul Extenturilor Local – folosind mape de biti in fisierele de date.
LOCAL Autoallocate
LOCAL Uniform size 128K – aloca extenturi de marimi egale.
January 11, 2019

6. Administrare Oracle 9i Administrare Tablespaceuri
Creare Tablespace:
Create tablespace curs
Datafile ‘E:\..\curs01.dbf’ size 100M
Autoextend on next 20M maxsize 1024M
Extent management local autoalocate
Logging/Nologging
January 11, 2019

7. Administrare Oracle 9i Administrare Tablespaceuri
Stergere Tablespace
Drop tablespace curs [cascade constraints] [include contents]
Observatie: nu se pot sterge (drop) fisiere dintr-un tablespace, ci doar intregul tablespace.
January 11, 2019

8. Administrare Oracle 9i Administrare Tablespaceuri
Adaugare Fisier de date la un Tablespace
Alter tablespace curs add datafile ‘E:\..\curs02.dbf’ size 200M;
Modificare marime fisier de date.
Alter tablespace curs datafile ‘E:\..\curs02.dbf’ resize 200M;
January 11, 2019

9. Administrare Oracle 9i Administrare Tablespaceuri
Creare Tablespace Temporar
Create temporary tablespace temp2 tempfile ‘E:\..\temp02.dbf’ size 200M extent management uniform 256K;
Default Temporary Tablespace: este oblicatoriu sa existe intr-o baza de date.
January 11, 2019

10. Administrare Oracle 9i Administrare Tablespaceuri
Creare Tablespace UNDO
Init.ora/spfile.ora
UNDO_MANAGEMENT =AUTO|MANUAL
MANUAL – folosind segment de rollback
UNDO_TABLESPACE = UNDO
Create UNDO tablespace UNDO2 datafile ‘E:\..\undo02.dbf’ size 1000M;
Alter system set UNDO_MANAGEMENT = UNDO2
UNDO_RETENTION = 900
January 11, 2019

11. Administrare Oracle 9i Administrare Tablespaceuri
Un Tablespace poate fi facut Offline sau ReadOnly
Observatie: Tablespace SYSTEM, UNDO si Default temporary NU pot fi facute Offline sau ReadOnly.
Alter tablespace curs offline normal|immediate;
Alter tablespace curs read only;
January 11, 2019

12. Administrare Oracle 9i Administrare Tablespaceuri
Creare si Mutare obiecte.
Create table test(a1 number, c1 char(20)) tablespace curs;
Create index idx01 on test(a1) tablespace curs;
Alter table test move tablespace users;
January 11, 2019

13. Administrare Oracle 9i Administrare Storage
Structura Logica
Block de Date
Extent
Segment = obiect in baza de date
January 11, 2019

14. Administrare Oracle 9i Administrare Storage
Structura Block Oracle
Header
Date
PCT FREE
PCT USED
ROWID
January 11, 2019

15. Administrare Oracle 9i Administrare Storage
Structura Storage Obiect
Create table test(col1 val1, col2 val2,…)
Storage(initial 128K next 256K pctincrease 50 maxextents 200;)
INITIAL – initial Extent
NEXT – next Extent
PCTINCREASE – procent de crestere.
MAXEXTENTS – numarul maxim de extenturi
January 11, 2019

16. Administrare Oracle 9i Administrare Utilizatori
Create user user1 identified by user1
Default tablespace users temporary tablespace temp
Alter user user1 identified by secret;
Grant connect to user1
Grant resource to user1
January 11, 2019

17. Administrare Oracle 9i Administrare Utilizatori
Privilegii
Privilegii System – “select all tables”, “create any table”
Grant create any table to user1 [with admin option]
Revoke create any table from user1
Privilegii Obiect – select table
Grant select on test to user1
Revoke…
Privilegii speciale: sysdba si sysoper
January 11, 2019

18. Administrare Oracle 9i Administrare Utilizatori
Roluri
Un rol grupeaza mai multe privilegii
Un rol poate contine alte roluri
Roluri predefinite: DBA – administrare, Import/Export – importul si exportul datelor
Rolurile pot contine parola
Create role cursrole identified by curs;
Grant connect to cursrole;
January 11, 2019