ORA-04062 - very urgent, please help

Question

Error "ORA-04062: timestamp of package "SYS.DBMS_SNAPSHOT_UTL" has been changed" appears while refreshing materialized view with DBMS_MVIEW.REFRESH, the configuration is described below, please, any suggestions what cause the problem?
I have the master database:
db_master
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bi
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for Linux: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
and replica database:
db_replica
Oracle Database 10g Release 10.2.0.3.0 - 64bit Production
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for Linux: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
the master and replica databases are installed at different hosts
At db_master:
1. I create table TEST
CREATE TABLE TEST (ID NUMBER PRIMARY KEY);
2.Then create materialized view log on TEST
CREATE MATERIALIZED VIEW LOG ON TEST;
At db_replica:
1. create dblink MASTER to db_master
2. create materialized view
CREATE MATERIALIZED VIEW MV_TEST REFRESH FAST AS SELECT * FROM TEST@MASTER
At db_master:
1.Insert some test values to TEST
INSERT INTO TEST VALUES (1);
INSERT INTO TEST VALUES (2);
INSERT INTO TEST VALUES (3);
COMMIT;
At db_replica:
1. call in job (every 10 sec) DBMS_MVIEW.REFRESH(‘MV_TEST’), or manually:
begin
DBMS_MVIEW.REFRESH('MV_TEST');
end;
sometimes (not at every call the below error callstack appears)
17:07:22 ORA-04062: timestamp of package "SYS.DBMS_SNAPSHOT_UTL" has been changed
17:07:22 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2254
17:07:22 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2460
17:07:22 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2429
17:07:22 ORA-06512: at line 4
Please, help me solve this problem, what cause ORA-04062?

Answer 1

Zjawka,
This forum doesn't consist of paid support personell.
Labeling your request as 'very urgent' must be considered rude.
If you would have looked up the error at all in the online documentation,
you would have got:
ORA-04062: %s of string has been changed
Cause: Attempt to execute a stored procedure to serve an RPC stub which specifies a timestamp or signature that is different from the current timestamp/signature of the procedure.
Action: Recompile the caller in order to pick up the new timestamp.
No why do you do take the trouble to dump all in this junk in a volunteer forum, and you can't be bothered to look up the error message?
Sybrand Bakker
Senior Oracle DBA