TSM client session hang and strange backup behavior

Trakais

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Hi
2 days ago my TSM started to hang most of backup sessions. TSM 6.2.5 (upgraded in may from 6.2.2), aix 5.3, ts3310, ~200 nodes. All client backup sessions starts like they should, but after 10-25mb data send most of them hangs and it is impossible to cancel them. Hangs all linux, windows, aix os backups, exchange and part of oracle and infromix (lanfree). Sessinos shows as RUNning. All MSSql nodes backups successfully. Reclamation, move, migrate processes runs fine, expirations hangs on all domains. OS backup primary disk storage pools are empty.

How could i troubleshoot problem further? In actlog un db2diag logs could not find any unusual message.
 
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