ORA-02050 transaction processing xxx has been rolled back, some remote databases may have problems

ORA-02050 transaction processing xxx has been rolled back, some remote databases may have problems

-- Database check found a database today reported a ORA-02050 error:
ORA-02050: transactions 35.28.256948 have been rolled back and some remote databases may have problems
ORA-01013: user request to cancel current action
ORA-01013: user request to cancel current action

According to the error message, it may be caused by a remote database operation failure. View the above explanation of metalink:
Error: ORA 2050
Text: transaction <num> rolled back, some remote DBs may be in-doubt
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Cause: There was a network failure or a remote failure during the two-phase commit.
Action: policy the database administrator.
The remote databases will automatically resynchronize when the failure is retried red.

The remote database is automatically synchronized.
Query the two dictionaries dba_2pc_pending and dba_2pc_neighbors.
If no data is found, the data is automatically restored.