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*ORA-01555 on Active Data Guard Standby Database [ID 1273808.1]*
known bug, download and apply the patch as written in the note
Oracle has also suggested same but they are not 100% sure like issue will get resolved after applying the patches.
they are just given suggestion on this to upgrade the database version.
Since issue is releated to critical production databases (nine databases = 3primary+3standby+3DR) we can't take risk.
Please suggest to resolve the issue
same batch job will run successfully once database get restarted but we will face same issue again on 2nd day.
So we are daily restarting our database complete the batch job.
Database Version: 18.104.22.168
OS: Windows Server 2008 r2