Steps to Use DBeaver to Check Oracle DB Tables for Data | Generated by AI

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I assume you’re asking how to use DBeaver to check which Oracle Database tables contain data, based on your previous question about finding tables with data in Oracle DB. DBeaver is a popular, free, multi-platform database tool that works well with Oracle and other databases. Below, I’ll walk you through how to use DBeaver to inspect your Oracle schemas and identify tables with data.

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1. Set Up a Connection to Your Oracle Database

• Install DBeaver: If you haven’t already, download and install DBeaver (Community Edition is fine) from dbeaver.io.
• Create a New Connection:
  1. Open DBeaver and click Database > New Database Connection in the menu.
  2. Select Oracle from the list and click Next.
  3. Enter your connection details:
     • Host: Your Oracle server’s hostname or IP.
     • Port: Typically 1521 (default for Oracle).
     • Database/SID or Service Name: Depending on your setup (e.g., SID = XE for Express Edition or a service name).
     • Username and Password: Your Oracle credentials.
  4. Click Test Connection to verify it works. You may need to download the Oracle JDBC driver if prompted (DBeaver can do this automatically).
  5. Click Finish to save the connection.

2. Explore Schemas in the Database Navigator

• In the Database Navigator (left-hand pane), expand your Oracle connection.
• You’ll see a list of schemas (e.g., your username or others you have access to). Expand the schema you want to inspect.
• Under each schema, expand the Tables node to see all tables.

3. Check Tables for Data Using the GUI

• View Table Data:
  1. Double-click a table name or right-click it and select Edit Table.
  2. Switch to the Data tab in the editor that opens.
  3. If the table has data, you’ll see rows displayed. If it’s empty, you’ll see no rows (or a message like “No data”).
     • By default, DBeaver fetches up to 200 rows. To fetch all rows, click the Fetch All Rows button (a small arrow icon) in the bottom toolbar of the Data tab.
• Count Rows Quickly:
  1. Right-click the table in the Database Navigator.
  2. Select Navigate > Row Count.
  3. DBeaver runs a SELECT COUNT(*) query and shows the result in a pop-up. If it’s 0, the table is empty.

4. Run SQL Queries to Check Multiple Tables

• If you want to check many tables at once (more efficient than clicking each one), use the SQL Editor:
  1. Click SQL Editor > New SQL Script (or press Ctrl + [).
  2. Set the schema context:
     • Use the dropdown at the top of the SQL Editor to select your schema, or run:

       ALTER SESSION SET CURRENT_SCHEMA = schema_name;
       

       Replace schema_name with your target schema (e.g., HR).

  3. Query row counts for all tables:
     • Use this SQL to list tables with data (similar to my previous answer):

       SELECT table_name, num_rows
       FROM user_tables
       WHERE num_rows > 0
       ORDER BY num_rows DESC;
       

     • Run it by pressing Ctrl + Enter. Results appear in the Results tab below.
     • USER_TABLES shows tables in your schema. Use ALL_TABLES for tables you can access across schemas:

       SELECT owner, table_name, num_rows
       FROM all_tables
       WHERE num_rows > 0
       AND owner = UPPER('schema_name');
       

  4. Note: NUM_ROWS is an estimate from the last statistics update. If it’s inaccurate, update stats with:

     EXEC DBMS_STATS.GATHER_SCHEMA_STATS('schema_name');
     

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