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Execute a tested migration plan engineered by certified Oracle ACEs to guarantee near-zero business disruption and zero data loss. Maintain continuous availability throughout complex cross-generation upgrades.
Upgrade legacy 11g and 12c environments to Oracle 19c to immediately eliminate expensive Sustaining Support surcharges. Restore direct access to automated security patches and critical bug fixes.
Optimize database architecture during the migration process to eliminate execution bottlenecks and enforce peak operational speed. Lock in efficient query paths before turning on production traffic.
Evaluate schema complexity, custom code, database sizing, and third-party dependencies in your current Oracle 11g or 12c setup. Identifying these factors up front ensures a clear migration scope and resolves compatibility hurdles before writing any code.
Select the optimal migration technology—including Transportable Tablespaces, Oracle Data Guard, or AutoUpgrade—to meet strict Recovery Time Objectives (RTO). Every blueprint incorporates verified fallback and rollback procedures to protect continuous business operations.
Execute trial upgrades in a staging environment using Real Application Testing (RAT) and SQL Plan Management (SPM). Benchmarking workloads under real-world simulation ensures execution stability and prevents query latency issues post-cutover.
Senior Database Engineers lead the live cutover during your designated maintenance window, executing database conversions and application reconnects. Immediate health checks validate total data integrity and operational stability before full release.
Maintain fast, reliable query performance by adjusting database memory allocation and index structures based on real-time post-upgrade metrics. Secure seamless, long-term operational control through hands-on knowledge transfer delivered directly to your internal team.
Legacy releases like Oracle 11g and 12c have passed Premier and Extended Support, forcing organizations into Sustaining Support. This tier carries significant operational risk, as Oracle no longer provides automated security patches, bug fixes, or regulatory compliance updates. Upgrading to Oracle 19c—the long-term support release supported through 2029—restores full access to security patching, optimizes hardware utilization, and eliminates costly support surcharges.
We leverage advanced migration methodologies—including Oracle Data Guard, Transportable Tablespaces, and zero-downtime cutover techniques—tailored to your specific Recovery Time Objective (RTO). By running comprehensive dry runs in staging environments and fine-tuning execution scripts beforehand, Pythian reduces production cutover windows to hours or even minutes, scheduled entirely around your maintenance windows.
Direct upgrades depend on your exact source release. Direct upgrades to 19c are natively supported from releases like 11.2.0.4, 12.1.0.2, and 12.2.0.1. Older releases (such as 11.2.0.3 or earlier) require an intermediate step or an out-of-place migration strategy using tools like Data Pump or GoldenGate. Our certified Oracle ACEs evaluate your source architecture during discovery to define the shortest, safest path.
SQL execution plans can shift significantly when migrating across database generations due to changes in the optimizer. Pythian mitigates this risk by using Real Application Testing (RAT), SQL Plan Management (SPM), and custom workload simulations prior to go-live. We capture baseline performance metrics in your source environment and lock optimized execution plans into 19c before turning on production traffic.
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