How to synchronize tables

Question

Hi to all,
In two schemas I have two table Table1 and Table2, very complex and with the same fields and the same records.
It's possibile update Table2 from Table1 or, better synchronize table2 with table1 ?
Thank You and Best regards
Gaetano

Answer 1

No. You are missing the syntax.
Here is one ->
satyaki>
satyaki>
satyaki>select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE    10.2.0.3.0      Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Elapsed: 00:00:00.08
satyaki>
satyaki>create table Nick_Demo
  2     as
  3       select * from emp
  4       where rownum < 5;
Table created.
Elapsed: 00:00:04.73
satyaki>
satyaki>select * from Nick_Demo;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7777 SOURAV     SLS                  14-SEP-08      45000       3400         10
      7903                                                 1000                    10
      7499 Travor     SALESMAN        7698 20-FEB-81       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
Elapsed: 00:00:00.71
satyaki>
satyaki>
satyaki>update Nick_Demo
  2     set ename = 'Kirk'
  3     where empno = 7903;
1 row updated.
Elapsed: 00:00:01.24
satyaki>
satyaki>commit;
Commit complete.
Elapsed: 00:00:00.00
satyaki>
satyaki>
satyaki>select * from Nick_Demo;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7777 SOURAV     SLS                  14-SEP-08      45000       3400         10
      7903 Kirk                                            1000                    10
      7499 Travor     SALESMAN        7698 20-FEB-81       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
Elapsed: 00:00:00.08
satyaki>
satyaki>
satyaki>
satyaki>
satyaki>
satyaki>
satyaki>merge into Nick_Demo o
  2  using emp n
  3  on ( o.empno = n.empno )
  4  when matched then
  5    update set o.ename = n.ename,
  6               o.job   = n.job,
  7               o.mgr   = n.mgr,
  8               o.hiredate = n.hiredate,
  9               o.sal = n.sal,
10               o.comm = n.comm,
11               o.deptno = n.deptno
12  when not matched then
13    insert(o.ename,o.job) values(n.ename,n.job);
14 rows merged.
Elapsed: 00:00:00.57
satyaki>
satyaki>select * from Nick_Demo;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7777 SOURAV     SLS                  14-SEP-08      45000       3400         10
      7903                                                 1000                    10
      7499 Travor     SALESMAN        7698 20-FEB-81       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
           TURNER     SALESMAN
           KING       PRESIDENT
           CLARK      MANAGER
           MARTIN     SALESMAN
           SCOTT      ANALYST
           BLAKE      MANAGER
           JONES      MANAGER
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
           FORD       ANALYST
           ADAMS      CLERK
           JAMES      CLERK
14 rows selected.
Elapsed: 00:00:00.16Regards.
Satyaki De.