Free 1Z0-1094-24 sample questions

Correct answer: No target TDE parameters are required; ZDM automatically handles the key migration from OKV.

When migrating to an Autonomous Database, the target TDE configuration is managed by Oracle. ADB uses an Oracle-managed keystore. Therefore, you do not configure any target TDE parameters (like `TGT_TDE_KEYSTORE_TYPE` or `TGT_TDE_KEYSTORE_PASSWORD`) in the ZDM response file. ZDM is designed to handle the data movement, and upon import into ADB, the data will be encrypted using the target ADB's TDE keys. The source TDE keystore details are needed for the export phase, but the target side is managed automatically by the ADB service.

Correct answers: Zero Downtime Migration (ZDM) physical online migration.; Migration using Oracle GoldenGate.

ZDM physical online migration is suitable as it uses Data Guard to synchronize the databases, allowing for a very brief switchover, easily meeting the <30 minute downtime requirement.

Oracle GoldenGate provides near-zero downtime migration by replicating transactions, allowing for a controlled and very fast switchover. This method is ideal for meeting stringent downtime requirements.

Correct answer: False

This statement is false. In an Autonomous Database, tablespace management is handled automatically by Oracle. Users cannot create tablespaces. When you import data using Data Pump, the objects are automatically placed into the default `DATA` tablespace. The `REMAP_TABLESPACE` parameter can be used during import, but it remaps to the existing `DATA` tablespace, not to user-created tablespaces.

Correct answer: A database link user with the `CREATE PLUGGABLE DATABASE` privilege was not created in the target CDB.

The ORA-65169 error, 'missing or invalid password in database link,' is commonly encountered during remote cloning when the database link setup is incorrect. A critical step is creating a common user in the target CDB that has the `CREATE PLUGGABLE DATABASE` system privilege. The database link in the source CDB must then connect to the target CDB using this specific user's credentials. Failure to create this user or grant the necessary privilege will cause the remote clone operation to fail.

Correct answer: An ELT approach where raw data from both sources is first loaded into staging tables in ADW, and then SQL-based transformations are executed within ADW to populate the final tables.

The most efficient approach for this scenario is ELT (Extract, Load, Transform). Autonomous Data Warehouse is a powerful, highly optimized query engine. By loading the raw data into staging tables first, you can leverage the massively parallel processing capabilities of ADW to perform the complex joins and transformations using SQL. This is significantly more scalable and performant than pulling all the data to a separate mid-tier transformation engine (ETL). OCI Data Integration services are optimized for this ELT pattern.

Correct answer: ZDM_RMAN_CHANNEL_COUNT

The `ZDM_RMAN_CHANNEL_COUNT` parameter in the ZDM response file controls the number of parallel RMAN channels used for the backup and restore operations. The default value is often low. To fully utilize a high-speed network link like a 1 Gbps FastConnect, increasing this value will create more parallel streams for the data transfer to OCI Object Storage, significantly improving the overall performance of the initial data transfer phase. The other parameters are for configuration, not performance tuning of the transfer.

Correct answers: Integrate the target database with the OCI Vault service to manage the TDE master keys.; Configure the target database to use OKV (Oracle Key Vault) running on a separate dedicated compute instance in OCI.

OCI Vault is a managed key management service that securely stores and controls access to encryption keys. Integrating the database with OCI Vault ensures the TDE master keys are managed outside the DB System's file system in a FIPS 140-2 Level 3 certified hardware security module.

Oracle Key Vault (OKV) is a centralized key management solution. By deploying OKV on a separate, hardened compute instance, you can manage the TDE master keys centrally and ensure they are not stored on the database server itself, meeting the security requirement.

Correct answer: As a set of metadata tables within a dedicated user schema in the target Oracle database.

The SQL Developer Migration Wizard requires a migration repository to store its metadata. This repository is created as a collection of tables, views, and other objects within a dedicated user schema in the *target* Oracle database. The wizard prompts for credentials for a user (which it can create) to install this repository before the migration process begins.

Correct answer: Blocks

When using `ESTIMATE_ONLY=Y` with Data Pump Export, the estimate of the space that would be consumed is provided in Oracle database blocks, not in bytes, megabytes, or gigabytes. The user must then multiply this number by the database block size to get the estimate in bytes.

Correct answer: Transportable Tablespaces

Transportable Tablespaces (TTS) is a physical migration method that copies data files directly. Because of this, it is highly sensitive to differences in the time zone file version between the source and target. If there is a mismatch, data of the TIMESTAMP WITH TIME ZONE datatype can become corrupted or misinterpreted after the tablespaces are plugged in. This requires either upgrading the time zone file on one of the databases to match the other or taking corrective actions post-migration. Logical methods like Data Pump handle the conversion automatically.