Buradasın

SAP ODP Delta Queue Anatomy

Yapay zekadan makale özeti

Framework Overview: ODP is SAP Netweaver-based framework for connecting ERP to other systems
Standard BW Extractors became ODP compatible via BS_ANLY_DS_RELEASE_ODP
Only ODP extractors supported for BW/4HANA data target
ODQ Structure and Functionality: ODQ encapsulates data for consumers in physical queue
Enables "extract once, deploy many" architectures
Provides high data compression (>90%) and EOIO service quality
Uses three tables: ODQDATA_C, ODQDATA_F, and ODQDATA
Delta Types and Processing: Delta Type 'D' writes records directly to ODQ
Delta Type 'E' determines delta through extractor on request
Each BW system can have multiple subscriptions to same ODQ
Data cannot be changed in ODQ, unlike PSA
Retention and Management: Default retention period is 24 hours for retrieved data
Data remains in queue until flagged as retrieved or invalid
Retention period can be manually adjusted in ODQ_CLEANUP
Failed requests cannot be deleted without impacting deltas
Testing and Limitations: RODPS_REPL_TEST program used for extraction testing
Data Services and OData can only extract full load
Invalid character errors in BW activation cannot be resolved in ODQ