OUTPUT FILE OF CONCURRENT REQUESTS ARE GENERATED OF SIZE ZERO INTERMITTENTLY under $APPLPTMP

Hi experts:

I have a question about temporary files under $APPLPTMP.

Found OUTPUT FILE OF CONCURRENT REQUESTS ARE GENERATED OF SIZE ZERO INTERMITTENTLY under $APPLPTMP.

This is mentioned in the following BUG:

Bug 8322750 : OUTPUT FILE OF CONCURRENT REQUESTS ARE GENERATED OF SIZE ZERO INTERMITTENTLY

According this BUG there is a Note also described this issue.

Output File Of PLSQL Based Concurrent Requests Are Generated of Size Zero Intermittently (Doc ID 821408.1)

But the env not reach 7 digits for the sequence value, but facing the same issue.

select applsys.fnd_temp_files_s.currval from dual;

53036

And the env not use RAC, just a single env.