Saturday, April 14, 2012

ORA-04043 and ORA-00980

This example was tested on Oracle 9. First create a table:
SQL> create table table1 (col1 number)
  2  /
Table created.
Then create a synonym pointing to that table:
SQL> create synonym synonym1 for table1
  2  /
Synonym created.
SQL> desc synonym1
Name                       Null?    Type
-------------------------- -------- ------------------
COL1                                NUMBER
Rename the underlying the table:
SQL> rename table1 to table2
  2  /
Table renamed.
Now, if you describe the table via the synonym, you get an ORA-04043, which I have shown elsewhere:
SQL> desc synonym1
ORA-04043: object "ORACLE"."TABLE1" does not exist
But, if you select from the table via the synonym, you get an ORA-00980:
SQL> select * from synonym1
  2  /
select * from synonym1
ERROR at line 1:
ORA-00980: synonym translation is no longer valid
Depending on the circumstances, you could fix this as follows:
(1)  Rename the table back again, if it was renamed by mistake in the first place.
(2)  Drop and recreate the synonym so that it points to the new table name.

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