RE: reads by KTSJ

From: Noveljic Nenad <nenad.noveljic_at_vontobel.com>
Date: Thu, 14 May 2020 08:20:52 +0000
Message-ID: <7362_1589444472_5EBCFF78_7362_10055_1_4833a745d68e4ea4aef6f5b017802796_at_vontobel.com>


The call stacks weren't collected, because w000, the process for which the tracing was switched on, didn't participate in repairing.

I limited the number of slaves to 1, so that at next occurrence the stacks should be collected:

alter system set "_max_spacebg_slaves"=1 scope=both ;

The list is empty:

select * from X$KTSP_REPAIR_LIST ;

no rows selected

It's scary to suddenly see heavy IO activity in the background and guessing what might that be.

Luckily, as Tanel discovered there's a way to control the behavior:

_assm_segment_repair_timelimit
_assm_segment_repair_maxblks

It's not ASM rebalancing - I use ZFS.

Best regards,

Nenad

https://nenadnoveljic.com/blog/



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i0zX+n{+i^ Received on Thu May 14 2020 - 10:20:52 CEST

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