EXP-00090:cannot pin type"SYSTEM"."REPCAT$_OBJECT_NULL_VECTOR"

Hi,
Can any one help please? We got this error from our full export script this morning. The script had been running successfully for several months, nothing has changed, the database is 10.1.0.3.0 and the export command which runs in a cronjob is:
exp system/systempwd grants=Y full=Y file=exp.dmp buffer=409600 statistics=none
I've tried to do some research on the error message but did not get anything helpful. The export terminated successfully with warnings.
thank you.

Pl post the complete error message from the export log. See if these MOS Docs can help
797319.1 - EXP-90 EXP-56 OCI-22303 Obtained During User Export When the Type is Invalid
133056.1 - EXP-90 EXP-56 OCI-22303 warning while exporting SYS schema
294543.1 - Export Aborts with EXP-0 and OCI-22303 (type "SYS"."AQ$_EVENT_MESSAGE" not found)
HTH
Srini

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    Patrick Liang
    TechNet Community Support

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    We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
    Click
    HERE to participate the survey.

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    Forum Support
    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
    [email protected]
    Linda Li
    TechNet Community Support

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