How can I delete all objects under a schema in db2?
In DB2, you can delete all objects under a specific schema by following these steps.
- First, make sure you have sufficient permissions to delete all objects under the schema. You will need DROP permission as well as owner permissions for all objects being deleted.
- Firstly, connect to the DB2 database. You can use the following command to connect to the database:
db2 connect to database_name
database_name is the name of the database you want to connect to.
- Next, use the following command to list all objects in the pattern.
db2 "select rtrim(tabschema)||'.'||rtrim(tabname) from syscat.tables where tabschema = 'your_schema_name'"
Replace your_schema_name with the name of the schema of the object you want to delete.
- Check the objects listed in the previous step and make sure that you want to delete them. If you are sure that you want to delete them, proceed with the following steps.
- Interactive sed command to delete all tables in a schema:
db2 "export to - of del modified by identityval='N'"
Replace “-” with the filename of the table listed in the file. This will generate a file containing SQL statements to delete the table.
- Execute the generated SQL file by running the following command:
db2 -tvf generated_file.sql
The file name of the SQL file generated in step 5 is generated_file.sql.
- Repeat steps 5 and 6 for other types of objects such as views, indexes, triggers, etc. You will need to generate and execute appropriate SQL statements to delete these objects.
Please be aware that deleting objects in delete mode is a risky operation as it will permanently erase these objects. Before proceeding with this action, make sure you understand the objects being deleted and back up the database in case of any unexpected circumstances.
