To perform a full backup of a DB2 database using the export method, you can use the following steps:

Open a command prompt or terminal window on the server where the DB2 database is located.

Log in to the DB2 database using the db2 command. For example:


db2 connect to <database_name> user <username> using <password>
Run the db2look command to generate a script that recreates the database schema. For example:


db2look -d <database_name> -e -o <output_file_name>
This command generates a script that contains the database schema in SQL format and saves it to the specified output file.

Run the db2export command to export the data from the database. For example:


db2export -d <database_name> -f <output_file_name>
This command exports the entire database to a file in delimited format, which can be used to recreate the database later.

Once the export process completes, run the db2 terminate command to disconnect from the database. For example:

db2 terminate
Copy the exported file to a secure backup location.

Note: You can use the db2import command to import the data back into the database if necessary. Also, make sure to backup the database regularly to prevent data loss.

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To import a full backup of a DB2 database using the import method, you can use the following steps:

Open a command prompt or terminal window on the server where the DB2 database is located.

Log in to the DB2 database using the db2 command. For example:


db2 connect to <database_name> user <username> using <password>
Run the db2look command to generate a script that recreates the database schema. For example:


db2look -d <database_name> -e -o <output_file_name>
This command generates a script that contains the database schema in SQL format and saves it to the specified output file.

Run the db2 create database command to create an empty database with the same name as the original database. For example:


db2 create database <database_name>
Run the db2 connect to command to connect to the new database. For example:


db2 connect to <database_name> user <username> using <password>
Run the db2set command to set the DB2LOAD utility's SQLDB variable to the path of the database. For example:


db2set DB2LOAD_OPTS=-SQLDB=<database_path>
Run the db2 import command to import the data into the new database. For example:


db2 import -d <database_name> -f <input_file_name>
This command imports the data from the backup file into the new database.

Once the import process completes, run the db2 terminate command to disconnect from the database. For example:


db2 terminate
Note: You can use the db2look command to generate the SQL script that recreates the database schema and tables, and then use the db2 import command to import the data into the new database. Also, make sure to backup the database regularly to prevent data loss.


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To upgrade a DB2 database using the db2export and db2import commands, you can follow these steps:

Take a full backup of the existing database using the db2 backup command. This will serve as a backup in case anything goes wrong during the upgrade process.

Run the db2look command to generate a script that contains the database schema and other database objects. This can be done using the following command:


db2look -d <database_name> -e -o <output_file_name>
This will create an SQL script that contains the database schema, as well as any other database objects such as views, triggers, and indexes. Save the output to a file.

Run the db2export command to export the data from the existing database. This can be done using the following command:


db2export -d <database_name> -f <output_file_name>
This will create a delimited file containing the data from the existing database. Save the output to a file.

Create a new database with the upgraded version of DB2.

Run the SQL script generated by the db2look command on the new database to recreate the database schema and other objects. This can be done using the following command:


db2 -tvf <sql_script_file>
This will create the necessary tables, indexes, views, and other database objects on the new database.

Run the db2 import command to import the data from the delimited file created by the db2export command into the new database. This can be done using the following command:


db2 import -d <database_name> -f <input_file_name>
This will import the data from the delimited file into the new database.

Verify that the data was imported correctly by running queries against the new database.

If everything looks good, delete the old database and use the new database going forward.

Note that this process can be time-consuming, especially for large databases. Be sure to plan accordingly and perform the upgrade during a maintenance window. Also, make sure to back up the database regularly to prevent data loss.