OCI 1Z0-1123-25 Glossary: Key Terms
March 31, 2026
OCI 1Z0-1123-25 glossary of assessments, landing zones, cutover planning, and migration terms.
Use this glossary to clean up high-confusion OCI migration terms before you go back into mixed sets. On this exam, terminology mistakes usually hide a sequencing or cutover mistake.
High-value terms
| Term |
What it means here |
Why it matters on the exam |
| Cutover |
the planned point where production traffic or responsibility shifts to the new environment |
many questions hinge on whether the switch is actually ready |
| Dependency map |
the record of systems, services, and sequences that affect migration order |
weak dependency thinking breaks otherwise good plans |
| Downtime window |
the amount of unavailable time a migration plan can tolerate |
this often drives online vs offline choices |
| FastConnect |
OCI private connectivity option for linking external environments into OCI |
common tie-break against VPN |
| Rollback path |
the recovery option that returns operations to the old environment if cutover fails |
rollback discipline is a strong-answer marker |
| Staging |
a temporary holding or preparation step before the final move |
staging is not the final switch |
| Transfer path |
the method used to move data or workloads from source to destination |
the path is not the same as validation |
| Validation step |
the checkpoint that confirms readiness before cutover |
validation is where many weak plans fail |
| VCN |
OCI’s private network boundary used to place migrated workloads |
many migration questions still hinge on network placement |
| Wave migration |
moving applications or datasets in grouped phases instead of all at once |
waves often reduce risk and shrink blast radius |
Common confusion pairs
| Pair |
Clean separation |
| Staging vs cutover |
staging prepares the move, cutover is the final switch |
| Validation vs rollback |
validation checks readiness, rollback reverses a failed or unsafe move |
| Connectivity design vs migration tool |
connectivity design creates the path, the migration tool moves or syncs the workload |
| Database migration vs general data transfer |
database migration understands database-specific movement, general transfer handles broader file or object movement |
| Single-step move vs wave migration |
a single-step move changes everything at once, wave migration sequences groups to reduce risk |
| Downtime window vs stabilization period |
downtime window is tolerated outage, stabilization is the monitored period after cutover |
| Inventory vs dependency map |
inventory lists what exists, dependency map explains how components affect sequence and risk |
Fast recall anchors
| If you see… |
Think… |
| final production switch |
cutover |
| “can we go back?” |
rollback path |
| grouped movement to reduce blast radius |
wave migration |
| “is it safe to proceed?” |
validation step |
If three terms blur together
| Terms |
Short reset |
| staging, transfer, cutover |
staging prepares, transfer moves, cutover switches production responsibility |
| validation, rollback, stabilization |
validation proves readiness, rollback reverses a failed move, stabilization watches the new state after switch |
| VPN, FastConnect, DRG |
VPN and FastConnect are private connectivity paths, DRG is the routing hub in broader designs |
| inventory, dependency map, wave |
inventory shows assets, dependency map shows order constraints, waves group the migration sequence |
Route misses well
| If you missed because… |
Go next |
| you mixed up migration phases |
FAQ |
| you need fast cutover and connectivity tie-breaks |
Cheat Sheet |
| you need a paced rebuild of the weak lane |
Study Plan |
| you need the official Oracle or OCI source |
Resources |
Revised on Monday, June 15, 2026