How to drop a table if it exist in oracle with dbLink?I am here trying to connect to remote database using DBLink in oracle.I am using oracle sql developer.
DROP TABLE TableName@dbLinkName
. This gives me error Unknown Command.
begin declare
v_mytableobject_id
NUMBER(10);
SELECT
object_id INTO v_mytableobject_id FROM user_objects@dblink
WHERE
object_name = 'MYTABLE';
IF v_mytableobject_id IS NOT NULL THEN
dbms_utility.exec_ddl_statement@dblink ( 'drop table MYTABLE' );
ELSE
dbms_utility.exec_ddl_statement@dblink ( 'CREATE TABLE MYTABLE
(ID NUMBER(5,0) GENERATED ALWAYS AS IDENTITY MINVALUE 1 MAXVALUE 9999999999999999999999999999 INCREMENT BY 1 START WITH 1 CACHE 20 NOORDER NOCYCLE NOKEEP NOSCALE ,
CODE NVARCHAR2(15),
DESCRIPTION NVARCHAR2(125)
)'
);
dbms_utility.exec_ddl_statement@dblink ( 'CREATE UNIQUE INDEX MYTABLE_PK ON MYTABLE (ID)
PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)'
);
END IF;
end;
You can't drop table just like that:
SQL> drop table test@dbl_mike;
drop table test@dbl_mike
*
ERROR at line 1:
ORA-02021: DDL operations are not allowed on a remote database
There's a workaround, though:
SQL> begin
2 dbms_utility.exec_ddl_statement@dbl_mike('drop table test');
3 end;
4 /
PL/SQL procedure successfully completed.
SQL>