Import error with snapshot logs

Question

I have an export that is a full from our production database. I'm trying to import a small subset of tables from a user to a different user. One of the tables has a snapshot log against it I believe due to the error msg in the import file. I don't care about the snapshot log I just want to get the table imported. How can I tell import to avoid the snapshot log. If this is not possible, how do I figure out what table it's says can't be found to import into.
IMP log:
. importing TYUADM's objects into DWADM
. . importing table "ZONE" 10583 rows imported
IMP-00017: following statement failed with ORACLE error 942:
"BEGIN SYS.DBMS_REPUTIL.SYNC_UP_REP('TYUADM','ZONE'); END;"
IMP-00003: ORACLE error 942 encountered
ORA-00942: table or view does not exist
ORA-06512: at "SYS.DBMS_INTERNAL_TRIGGER", line 79
ORA-06512: at "SYS.DBMS_INTERNAL_TRIGGER", line 157
ORA-06512: at "SYS.DBMS_INTERNAL_TRIGGER", line 201
ORA-06512: at "SYS.DBMS_REPUTIL", line 616
ORA-06512: at line 1
"BEGIN SYS.DBMS_SNAPSHOT_UTL.SYNC_UP_LOG('TYUADM','ZONE'); END;"
IMP-00003: ORACLE error 1435 encountered
ORA-01435: user does not exist
ORA-06512: at "SYS.DBMS_ISNAPSHOT", line 108
ORA-06512: at "SYS.DBMS_SNAPSHOT_UTL", line 1666
ORA-06512: at line 1
IMP-00000: Import terminated unsuccessfully

Answer 1

Oracle Server - Enterprise Edition - Version: 8.1.7.0 to 11.2.0.2 - Release: 8.1.7 to 11.2
Oracle Server - Personal Edition - Version: 8.1.7.0 to 11.2.0.2 [Release: 8.1.7 to 11.2]
Oracle Server - Standard Edition - Version: 8.1.7.0 to 11.2.0.2 [Release: 8.1.7 to 11.2]
Information in this document applies to any platform.
Symptoms
You have created a snapshot log:
SQL> connect system/manager
SQL> grant create snapshot to scott;
SQL> connect scott/tiger
SQL> create snapshot my_snap as select * from emp;
SQL> create snapshot log on scott.emp;
You run a user level export:
% exp system/manager file=exp_s.dmp log=exp_s.log owner=scott
Export: Release 9.2.0.6.0 - Production on Tue Dec 28 08:06:12 2004
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to: Oracle9i Enterprise Edition Release 9.2.0.6.0 - Production
Export terminated successfully without warnings.
You run a user level import, e.g. in a different database:
SQL> connect system/manager
SQL> create user hugo identified by hugo default tablespace
users temporary tablespace temp
quota unlimited on users;
SQL> grant create session, create table, create snapshot
to hugo;
% imp system/manager file=exp_s.dmp log=imp_s.log fromuser=scott touser=hugo
Import: Release 9.2.0.6.0 - Production on Tue Dec 28 08:08:16 2004
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to: Oracle9i Enterprise Edition Release 9.2.0.6.0 - Production
. importing SCOTT's objects into HUGO
. . importing table "BONUS" 0 rows imported
. . importing table "DEPT" 4 rows imported
. . importing table "EMP" 14 rows imported
. . importing table "MLOG$_EMP" 0 rows imported
. . importing table "MY_SNAP" 14 rows imported
. . importing table "SALGRADE" 5 rows imported
IMP-00017: following statement failed with ORACLE error 942:
"BEGIN SYS.DBMS_SNAPSHOT_UTL.SYNC_UP_LOG('SCOTT','EMP'); END;"
IMP-00003: ORACLE error 942 encountered
ORA-00942: table or view does not exist
ORA-06512: at "SYS.DBMS_SNAPSHOT_UTL", line 1589
ORA-06512: at line 1
Note that the line number in the first ORA-6512 error my differ between versions:
- in 8.1.7.4.0: ORA-06512: at "SYS.DBMS_SNAPSHOT_UTL", line 1033
- in 9.2.0.6.0: ORA-06512: at "SYS.DBMS_SNAPSHOT_UTL", line 1589
- in 10.1.0.3.0: ORA-06512: at "SYS.DBMS_SNAPSHOT_UTL", line 1599
- in 10.2.0.4.0: ORA-06512: at "SYS.DBMS_SNAPSHOT_UTL", line 1666
Also note that the same errors occur when the export was done with a table level export.
If the user SCOTT (FROMUSER) does not exist in the target database, import aborts with:
"CREATE SNAPSHOT LOG ON "SCOTT"."EMP" WITH PRIMARY KEY EXCLUDING NEW VALUES"
"USING ("MLOG$_EMP", (...left_out...))"
IMP-00003: ORACLE error 1435 encountered
ORA-01435: user does not exist
IMP-00000: Import terminated unsuccessfully
Changes
The information in this article applies to:
- Oracle Server - Enterprise Edition - Version: 8.1.7.0 to 11.2.0.x
- Oracle Server - Personal Edition - Version: 8.1.7.0 to 11.2.0.x
- Oracle Server - Standard Edition - Version: 8.1.7.0 to 11.2.0.x
This problem can occur on any platform.
Cause
Snapshots, snapshot logs, and related items are exported with the schema name explicitly given in the DDL statements, therefore, snapshots and their related items cannot be imported into a different schema.
If you attempt to use FROMUSER and TOUSER to import snapshot data, an error will be written to the Import log file and the items will not be imported.
Solution
It is expected behavior that the snapshot log cannot be imported with a FROMUSER and TOUSER import. Therefore the errors should either be prevented from happening, or be ignored:
1. Either delete the snapshot logs before the export takes place. Then run the export and import. After import completes, re-create the snapshot logs manually, and if necessary, perform a refresh of the snapshot.
2. Or ensure that the FROMUSER (SCOTT in this example) exists in the target database, so the import session does not abort with the IMP-0 error (Import terminated unsuccessfully). During the import, ignore the errors that are related to the snapshot logs. After import completes, re-create the snapshot logs manually, and if necessary, perform a refresh of the snapshot.