Oracle 1Z0-078 case studies
Oracle 1Z0-078 · Put your knowledge to work in context.
The Oracle Database 12c Advanced Administration credential (exam 1Z0-078) is aimed at working database administrators who already handle day-to-day operations and want to demonstrate depth in the areas that separate a junior DBA from a senior one: recovery under pressure, diagnosing performance problems, and running a multitenant estate. The exam assumes familiarity with instance and storage architecture rather than teaching it, and it tests whether you can choose the right mechanism and predict its consequences. Coverage spans architecture and configuration, backup and recovery, performance tuning and diagnostics, storage and space management, the multitenant architecture with pluggable databases, data movement and replication, and security and auditing. Expect scenario-style multiple choice questions where several answers are technically valid and only one fits the stated constraint, such as available downtime, licensing, or recovery objectives. The Oracle 1Z0-078 case studies are 5 cases and about 2,798 words.
1HugePages Pool Exhaustion After SGA Increase
Your 19c single-instance database runs on Oracle Linux 7 on a host with 512 GB RAM. The SPFILE has memory target unset, sga target=320G, pga aggregate target=80G, and use large pages=ONLY.
564 words, about 3 min2FRA Undersized for a 14-Day Recovery Window
Your 12 TB production database runs in ARCHIVELOG mode with a 6 TB fast recovery area (db recovery file dest size=6T). RMAN retention is RECOVERY WINDOW OF 14 DAYS.
557 words, about 3 min3High Commit Rate and log file sync Latency
A 19c OLTP database runs on a 16-core host with 64 GB RAM. Between 10:00 and 11:00, application timeouts occur.
550 words, about 3 min4Refreshable PDB Clone Lag and Source FRA Pressure
CDB PRODCDB runs 19c with 45 PDBs, local undo, and ARCHIVELOG enabled. PDB APP is a 2.5 TB read/write PDB.
575 words, about 3 min5Unified Audit Policy Scope and SYSAUX Growth
After upgrading to 19c, unified auditing is enabled and mixed-mode auditing is off. Compliance requires auditing all successful and unsuccessful logons, all DDL by the local application user HR APP in PDB HR, and all changes to the AUDIT ADMIN role.
552 words, about 3 min