The Redo Commit Wait Pressure alert notifies you when its configured condition is met on Oracle instances so you can investigate and respond.
Mini DBA describes this alert as: Oracle log file sync waits as a percentage of current database time Sustained commit waits mean foreground sessions are waiting for commit confirmation. Check redo log I/O latency, commit frequency, synchronous Data Guard transport, and transaction design. Mini DBA evaluates this alert once a minute so changes are detected quickly. Because duration is used, Mini DBA can avoid treating a single short spike as a full incident when the condition clears quickly.
This alert measures Oracle log file sync waits as a share of database time. Sustained commit waits mean foreground sessions are waiting for commit confirmation.
Enable it once the instance has a normal workload baseline. It is especially useful on busy OLTP, reporting, and integration systems where resource pressure can quickly become user-visible.
Threshold meaning: % of DB time. Major threshold: 25 % of DB time. Minor threshold: 10 % of DB time. Comparison direction: over. Duration is used, so prefer requiring the condition to persist before paging people for transient spikes. For an over-threshold alert, decreasing a threshold makes that severity fire sooner; increasing it tolerates more load or pressure. Set the minor threshold as an early-warning level and the major threshold at the highest acceptable value for the service.
Compare log file sync with redo-write latency, commit frequency, transaction design, synchronous Data Guard transport, and storage saturation. Correct excessive commit patterns, slow redo storage, or synchronous transport delay; freeing unrelated disk files is not a remedy for commit latency.
If this alert is noisy, check whether the workload naturally has short bursts. Raise the duration or threshold for expected batch windows, but keep a lower route for production systems where user-facing latency matters. Avoid simply disabling the alert until you know whether the noise is caused by threshold choice or by a real capacity trend.