Synopsis:This runbook demonstrates a pragmatic, production-oriented procedure to restore a lost control file using RMAN controlfile autobackup in Oracle 19c. The guidance is actionable, includes a lab transcript, and is suitable for documentation, runbooks, or knowledge-base articles. Replace identifiers, paths and DBID values with values from your environment before executing. Assumptions & Preconditions Executive summary […]
This procedural article describes configuring a Snapshot Standby (Data Guard) and exercising the convert-to-snapshot / convert-back lifecycle. Follow the steps precisely and validate each checkpoint in your environment before proceeding. Step 1 — Verify roles on Primary and Standby On Primary: Sample output (Primary): On Standby: Sample output (Standby): Step 2 — Confirm archived log […]
In earlier versions of Oracle Database, statistics were collected mainly through scheduled jobs using DBMS_STATS. This often resulted in stale statistics between collection intervals, especially in OLTP environments with frequent DML operations. Oracle 19c introduces Real-Time Statistics, a feature that collects optimizer statistics immediately during DML operations such as INSERT, UPDATE, MERGE, and CREATE TABLE […]
1. What is Conflict Detection and Resolution (CDR) in bidirectional replication? Conflict Detection and Resolution (CDR) is a mechanism in Oracle GoldenGate to handle data conflicts that arise in bidirectional (active-active) replication setups, where the same table is being updated at multiple sites simultaneously. 🧠 Why is CDR needed? In active-active replication, changes can occur […]