Oracle Database 19c · Rate Limits
Oracle Database 19C Rate Limits
Oracle Database 19c throughput is operator-controlled via Database Resource Manager, session resource limits, and (for REST) ORDS pool configuration. Cloud-managed 19c (Autonomous DB, Base Database Service) inherits OCI throttling — 429 / 503 with Retry-After.
4 Limits
Throttle: 429
DatabaseOracleRate Limiting
Limits
Database Resource Manager database/consumer-group
configured per consumer group
Session resource limits session
SESSIONS_PER_USER, CPU_PER_SESSION (operator-set)
ORDS connection pool ORDS instance
jdbc.MaxLimit (operator-set)
Autonomous Database 19c instance
instance-shape-bounded
Policies
Resource Manager
Primary throughput-shaping mechanism — allocate CPU / IO / parallelism per consumer group.
ORDS tuning
Size connection pool to match expected concurrency for REST endpoints.
Backoff
Honor 429 / 503 from cloud services; ORA- errors handled with application-level retry.