Free Practice Questions for Oracle 1z0-1094-23 Exam

While character set, database version, database size, and endian format influence migration options to OCI, tablespaces themselves do not directly affect migration options. The physical organization of data within tablespaces is typically reconfigured during the migration process based on the target environment's requirements.

Oracle Zero Downtime Migration leverages Oracle technologies such as Data Guard for data replication, Recovery Manager (RMAN) for database backup and recovery, and SQLNet for network communication. These technologies work together to enable a physical online migration workflow, ensuring data consistency and minimizing downtime during the migration process.

For migrating a 12c source database to Oracle Autonomous Transaction Processing (ATP-D), Oracle Data Pump is a suitable utility. Data Pump facilitates high-speed data and metadata movement between Oracle databases, making it effective for cloud migrations by exporting data from the source and importing it into the target ATP instance.

For migrating a non-TDE-encrypted 19c CDB to Database Cloud Service using RMAN and backups stored in OCI Object Storage, the "instantiate from backup" option simplifies the process. This method automatically handles the necessary encryption for the cloud environment, streamlining the migration and ensuring compliance with cloud security standards.

The error ORA-19914 indicates encryption issues during RMAN backup to cloud storage. Enabling encryption with "SET ENCRYPTION ON" without a proper encryption key or missing the Object Storage encryption-at-rest key can lead to this error. Ensuring encryption keys are correctly configured and accessible is crucial for successful RMAN backups to the cloud.

For decision support systems that require fast queries over large volumes of data, an Autonomous Data Warehouse (ADW) is the most suitable type of autonomous database. ADW is optimized for high-performance, large-scale data analytics and reporting, providing the necessary capabilities to support complex queries and data analysis tasks in decision support systems.

For ZDM to communicate between the source and target database servers during a physical online migration, Port 22 (SSH) is used for secure shell access, and Port 1521 (Oracle Net Listener) is used for database connections. These ports must be open to enable ZDM to execute commands and transfer data.

The FLASHBACK_TIME parameter in a Data Pump parameter file is used to ensure a consistent export by setting a specific point in time for the export operation. This feature leverages Oracle Database's flashback technology to view the data as it existed at a previous point in time, ensuring that the exported data set is consistent and reflects the database state at the specified flashback time, which is crucial for maintaining data integrity during migration to Autonomous Database.

Oracle Zero Downtime Migration supports logical and physical migrations to Autonomous Database using Oracle Cloud Infrastructure (OCI) Object Storage. Logical migrations involve data extraction and loading using tools like Data Pump, while physical migrations involve moving database files directly. Both methods can be performed online or offline, with OCI Object Storage serving as an intermediary storage solution.