Expdp / impdp - Private synonyms using DB link not imported

Hi
I'd appreciate any help with this.
We are taking an export (expdp) of a database on Oracle EE 10.2.0.3 in Prod and then importing it into an identical DB on 10.2.0.5 in Dev.
I doubt the minor version difference is an issues, but I mention it for completeness.
Our expdp in prod used to look like this:
expdp agdba/x directory=DATA_PUMP_DIR dumpfile=X.DMP logfile=X.LOG schemas=A,B,C,D
We have changed it to:
expdp agdba/x directory=DATA_PUMP_DIR dumpfile=X.DMP logfile=X.LOG full=y EXCLUDE=SCHEMA:"IN ('E', 'F')"
( so basically do a full export, but exclude schemas E & F )
The impdp in dev has not changed (we import one schema at a time):
impdp agdba/x DUMPFILE=X.DMP LOGFILE=imp_X.LOG SCHEMAS=A DIRECTORY=DATA_PUMP_DIR TABLE_EXISTS_ACTION=SKIP
DB user AGDBA has been granted the DBA role...
The Issue:_
Private synonyms that use a DB link are NOT imported, but private synonyms that do NOT use a DB link ARE imported.
I can fix the issue by simply recreating the private synonyms using the DB link - e.g.:
CREATE SYNONYM EVENTLOGTBL FOR EVENTLOGTBL@FCISTOSMS;
Things were working fine until we change the expdp to use FULL. I see a few posts about synonyms and FULL=Y issues, but nothing quite like our problem.
Any ideas?
Thanks,
Andreas

Andreas Hess wrote:
So the problem is expdp FULL=Y for some reason does not export synonyms that refer to objects via DB links. I doubt that ... More than few times a week I refresh non-prod databases from a prod db, (it is schema level export not FULL=Y), and two of the schema own db links, and others have synonyms pointing to them. I have never encountered synonym problem (except that if db_links are invalid then impdp takes extremely long time to timeout while compiling pl/sql code.). We normally change db_links after the impdp is done, or (while it is importing table via another session).
I just re-ran sqlfile option with include=db_link,synonym option and i can see statements that create synonyms and create db links.
However i think the order in which impdp runs might be the source of your problem ... see this
Starting "ME"."SYS_SQL_FILE_SCHEMA_01": ME/******** dumpfile=xxxx.%u.dmp directory=xxxx_exp schemas=schema1,schema2,schema3 sqlfile=schema.sql include=db_link,synonym
Processing object type SCHEMA_EXPORT/SYNONYM/SYNONYM <<<< Synonyms are created first
Processing object type SCHEMA_EXPORT/DB_LINK <<<< db_links come later
Job "ME"."SYS_SQL_FILE_SCHEMA_01" successfully completed at 08:32:02So, it is conceivable that if you drop synonyms/db_links from your schemas before impdp, some synonyms will fail to create properly. This could be a version specific issue, mine is 11.2 and I don't see failures for synonym creation, i.e. no error messages while impdp. Next time you could try to drop objects except db_links and see if you still have the same issue.
Raj

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