copy from one database to another using oracle sql developer - connection failed -


i trying copy table 1 database using oracle sql developer. have username, password , sids.

copy uname1/password1@sid1 uname2/pwd2@sid2 insert table1 (*) using (select * message_table);

however getting connection failed error.

the 2 databases present in different host hosts (the hostname different in connection properties).

the table has 5 million records , cumbersome export/import

the copy command sql*plus command (not sql developer command). if have tnsname entries setup sid1 , sid2 (e.g. try tnsping), should able execute command.

another assumption table1 has same columns message_table (and columns have following data types: char, date, long, number or varchar2). also, insert command, need concerned primary keys (e.g. not inserting duplicate records).

i tried variation of command follows in sql*plus (with no errors):

copy scott/tiger@db1 scott/tiger@db2 create new_emp using select * emp;

after executed above statement, truncate new_emp table , executed command:

copy scott/tiger@db1 scott/tiger@db2 insert new_emp using select * emp;

with sql developer, following perform similar approach copying objects:

  1. on tool bar, select tools>database copy.

  2. identify source , destination connections copy options like. enter image description here

  3. for object type, select table(s). enter image description here

  4. specify specific table(s) (e.g. table1). enter image description here

the copy command approach old , features not being updated release of new data types. there number of more current approaches oracle's data pump (even tables).


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