How To Fix HH054 - « Read ahead » pourrait être de meilleure qualité (RA_PAGES trop grand ?)

SAP Error Message - Details

• Message type: E = Error

• Message class: HH - (Long) text for check tool 'infcfgcheck'

• Message number: 054

• Message text: « Read ahead » pourrait être de meilleure qualité (RA_PAGES trop grand ?)

Quelle est la cause de ce problème?

This is a single 'performance' check and therefore does not
describe a critical system status. It is neither necessary nor
time-critical to perform the steps described below, but they could
help improve the overall performance of your R/3 System.

Le système émet un message d'erreur et ne vous permettra pas de poursuivre cette transaction tant que l'erreur n'est pas résolue.

The quality of the Informix feature 'Read ahead' (percent ratio
between pages read as a preventive measure and pages actually used
in the database buffer) is not very good. The reason for this could
be that the ONCONFIG parameter 'RA_PAGES' is configured too large.
'RA-PAGES' specifies the number of pages to be read as a preventive
measure. If this value is constantly too large, the displacement
in the buffer will be too large. Only configure a 'realistic'
value for 'RA_PAGES'.
Also read Note 41360 (parameter 'RA_PAGES') about this topic.

Réponse du système

Comment corriger cette erreur?

To change an ONCONFIG parameter, edit file
'$INFORMIXDIR/etc/$ONCONFIG'. as user 'informix'.
CAUTION: The change will only become active after starting up the
database.

Extrait du message d'erreur du système SAP. Copyright SAP SE.