SAP HANA DBA Keybook
A complete, production-grade technical knowledge platform, dynamic SQL handbook, forensic troubleshooting guide, and advanced interview preparation resource for SAP HANA Database Administrators.
Operational Core Portals
Daily Morning DBA Operational Checklist
Battle-tested 5-point routine executed daily at 08:00 AM before peak business transaction traffic.
Verify instance status via HDB info and sapcontrol -nr <NR> -function GetProcessList. Confirm nameserver, indexserver, compileserver, and preprocessor are GREEN.
Inspect SYS.M_BACKUP_CATALOG. Confirm that overnight full/differential data backups and continuous automated log backups (every 15 min) completed successfully.
Query SYS.M_SERVICE_MEMORY. Verify Global Allocation Limit (GAL) vs. Resident Memory and Used Memory. Ensure no tenant approaches 90% allocation or OOM.
Review _SYS_STATISTICS.STATISTICS_CURRENT_ALERTS and inspect alert_<SID>.trc, nameserver.trc, and indexserver.trc for warnings, blocked locks, or slow SQL.
Execute hdbnsutil -sr_state to ensure secondary site is ACTIVE in syncmem mode with logreplay. Check df -h across /hana/data, /hana/log, and /hana/shared.
Complete SAP HANA DBA Curriculum (20 Modules)
Structured modular roadmap covering every requirement for enterprise production engineering and certification.
In-memory paradigm, column/row stores, compression, Scale-Up vs Scale-Out hardware.
Process hierarchy, hdbdaemon, nameserver, indexserver, MDC SystemDB & Tenant isolation.
Delta merge mechanics, write-ahead logging (WAL), savepoints, crash recovery.
HDBLCM lifecycle manager, SLES/RHEL prerequisites, swap configuration, Rocky Linux lab setup.
Filesystem mounts (/hana/shared, /hana/data, /hana/log), port formulas, HDB CLI tools.
Configuration layers (DEFAULT to HOST), .ini parameter hierarchy, dynamic reconfiguration.
Production-ready SQL queries for services, memory, CPU, locks, backups, and HSR.
HDBinfo vs. HDB info disambiguation, fullsysteminfo.py collection, trace & crash dump analysis.
SAP HANA Cockpit 2.0, Embedded Statistics Service (ESS), _SYS_STATISTICS alerts.
Full/differential backups, log archiving, backup catalog retention, Point-in-Time Recovery (PITR).
HANA System Replication modes (sync/syncmem/async), logreplay, planned takeover, failback.
Expensive statement tracing, Plan Visualizer (PlanViz), OOM dumps, lock contention triage.
Standard vs. restricted users, catalog vs. HDI roles, SSFS encryption keys, hdbuserstore.
SPS and revision patching via HDBLCM, pre-upgrade backups, SAP Host Agent maintenance.
Emergency P1 runbooks: /hana/log 100% full, Out-of-Memory dumps, indexserver crash-restart loop.
Application connectivity, homogeneous system refreshes (PRD to QAS), BDLS, SUM DMO.
Hands-on forensic case studies: post-crash indexserver startup, OOM root cause, Rocky Linux setup.
Searchable 3-5 year SAP HANA DBA question bank, strategic interview answers, quizzes, flashcards.
DBA cheat sheets, SAP Basis T-codes, dynamic views (M_*), port matrix, Linux commands.
Interactive visual architecture gallery rendered with Mermaid diagrams.