Vendor: Oracle
Exam Code: 1Z0-497
Exam Name: Oracle Database 12c Essentials
Certification: Oracle Certifications
Total Questions: 150 Q&A
Updated on: Jun 17, 2026
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Which two statements about multitenant architecture are true?
A. Multiple PDBs on a single server need multiple database instances and multiple sets of database files.
B. Although consolidated into a single physical database, PDBs mimic the behavior of non- CDBs.
C. A PDB administrator can use Oracle Flashback or point-in-time recovery to retrieve lost data from a PDB, only by shutting down all the PDBs from the CDB.
D. It is easier to collect performance metrics for many databases in a CDB than individual non- CDB databases.
E. It takes more time to apply a patch to one CDB that holds hundreds of PDBs than to hundreds of non-CDB databases.
Real-Time ADDM detects a high-load performance issue within the database. Which condition triggered it?
A. The average active sessions were more than three times the number of CPU cores.
B. Active sessions were more than 10% of total load and CPU utilization was more than 50%.
C. Memory allocations were more than 95% of physical memory.
D. Hung sessions were more than 10% of total sessions.
E. A deadlock was detected.
F. The session limit was close to 100%.
Examine the error:
GSM-45054: GSM error or NET-40006: unable to start GSH What is the cause of this error, and what
troubleshooting steps should you perform?
A. The GDS catalog database of its listener may be down. Verify that the GDS catalog database and its local listener are running.
B. The GDS pool database may be down. Make sure that the GDS pool databases are up and the service is enabled and started.
C. The GDS pool database's local listener may be down. Make sure that it is running.
D. The global service may be down. Verify that the pool databases are up and the service is started.
E. The global service may be disabled. Make sure that the pool databases are up and the service is enabled and started.
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