Performance issues in Oracle Cloud Infrastructure (OCI) databases can arise due to CPU saturation, I/O bottlenecks, long-running queries, or inefficient application design. As a Cloud Ops DBA, your role is to identify the root cause quickly and take corrective actions. This guide walks through a structured troubleshooting approach using both OCI CLI and Oracle dynamic […]
Troubleshooting with OCI CLI: Practical Examples 1. Checking Database System Status When users complain about slow connections or failures, the first step is to verify if the DB system is healthy. Sample Output Interpretation: 2. Checking Database Instance Health Sample Output Interpretation: 3. Checking Recent Database Backups When a backup job fails, confirm the backup […]
Oracle Core DBA A Core DBA traditionally manages on-premises databases. Their toolset revolves around direct database administration, storage, networking, and operating system integration. Common Tools Used by Core DBAs Cloud Ops DBA A Cloud Ops DBA works in cloud-native or hybrid environments. They still use Oracle database tools, but the scope expands to cloud provider […]
When you prepare reports, you often need numbers at different levels: detailed rows, subtotals, and a grand total. Without GROUPING SETS, you would write multiple queries and stitch them together with UNION ALL. With GROUPING SETS, one query does it all — more readable, more efficient. Let’s explore this using the HR schema tables (employees, […]