Migration from RAW DEVICE DDBB a File System ADA632

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1

Hi Experts

Recently v621 to v632 adabas migrate and raw to filesystem, and batch processes have increased the time of execution, which is critical.

The slowness is observed when there are many updates.

I read in the documentation that must be enabled with the parameter in the ADANUC unbuffered.

which is the best option:
ALL | CLEAR | The default

What is your recommendation?

Kind Regard
Angel Mendoza O

2

As the documentation says

so you can try UNBUFFERED=ALL, but it usually does not help a lot to tweak just (that) one parameter,
the whole set of ADANUC parameters will have to be reviewed.

Which OS are we talking about here ?

3

Hi Wolfgang,

The platform:
AIX61
ADA632
NAT6.3.10.1

ADANUC

. $ADADIR/db004/assign.bsh
dbid=004

DATAB=/opt/sisve/ada
export DATAB
. $ADADIR/$ADAVERS/database.bsh

NUCPLG=/PLOG/plog
NUCCLG=clog.dat
export NUCPLG NUCCLG

ADADMN=$ADADIR/$ADAVERS/adadmn
export ADADMN

ADANOD=$ADADIR/$ADAVERS/adanod
export ADANOD

$ADADIR/$ADAVERS/adanuc << END_OF_PARAMS >> $DATAB/db004/NUC.LOG 2>&1 &
db=4
plog
unbuffered=all
logging=
nt=50
nisnhq=15000
lwp=20m
lab=24m
lbp=2560m
nu=2000
tt=3000
tnaa=3000
tnae=4000
tnax=3000
write_limit=10
options=(truncation,open_required)
*
*
END_OF_PARAMS

4

Are the batch processes update-centric (many buffer-flushes ?) or did read-centric processes slow down as well ?

5

They are processes update-centric (many buffer-flushes takes a long time)

6

Did you increase the LBP when upgrading from ADA 6.2 to 6.3, or did you use lbp=2560m with 6.2 as well ?

7

No, it is the same