SMON rollback/transaction recovery disable, drop object

monitor recovery:

select * from V$FAST_START_TRANSACTIONS;

disable, drop, enable:

alter system set “_smu_debug_mode”=1024 ;

bounce db (?)

drop table …

remove “_smu_debug_mode”

bounce db

Recovery still going on.

Trying event:

event=”10513 trace name context forever, level 2″
event=”10061 trace name context forever, level 10″
fast_start_parallel_rollback=false

Bounce

drop the table

remove parameters and bounce

Results: if started with the beforementioned events set it skips recovery (no record in v$fast_start_transaction), it shutdowns immediate but after comming w/o events the txn is still there and locking on MMON – for that one see note

SMON Is Waiting On Latch High CPU Resource consumption MMON blocking SMON (Doc ID 1496453.1)

and workarround:

alter system set “_smu_debug_mode”=134217728;

(and kill mmon, database survives it)

 

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