Database Administration (MOSC)

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No new data in v$active_session_history for one instance

edited May 24, 2019 8:24AM in Database Administration (MOSC) 6 commentsAnswered ✓

Hello,

We have 4 node RAC.

Yesterday we had production problem, and one instance (instance 4) had to be restarted,

After that, I've noticed that there is no new data in v$active_session_history view for different instance (instance 2)

1 select inst_id,max(sample_time) from gv$active_session_history

2 group by inst_id

3* order by inst_id

INST_ID MAX(SAMPLE_TIME)

---------- ---------------------------------------------------------------------------

1 22.05.19 12:10:05.866

2 21.05.19 11:51:43.432

3 22.05.19 12:10:06.434

4 22.05.19 12:10:06.431

How to start collecting ASH again on Instance 2?

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