Solution : https://service.sap.com/sap/support/notes/405827 (Connexion à SAP Service Marketplace requise)
Résumé :
This SAP Note addresses the use of Journaling and Cluster File Systems or Raw Devices on Linux. It clarifies considerations for deploying database and SAP directories within these environments. Key points include: Journaling File Systems like ReiserFS and ext3 do not prevent data corruption post-crash and aren't a backup replacement; support for these arises from Linux distributors and database providers. Clustering solutions like Oracle RAC need Cluster File Systems for simultaneous access, while some databases might use NFS if certified. Raw devices show no performance benefit over file systems. Cluster File Systems are preferred over NFS for /usr/sap directories without intensive I/O operations. Always consult with the database manufacturer for support-related information.
Mots Clés :
guarantee simultaneous read/write access, component bc-op-lnx, bc-db-<db type>, normal operating system interfaces, linux file system cache, database manufacturer provide support, special failure mechanisms, larger block sizes, journaling file system, journaled file system
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