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Managing your Pega Platform database in Pega Cloud

Pega Cloud® supports certain database operations in Pega Platform™, including adding and deleting database columns and running queries on its composite schemas of PegaRULES, PegaDATA, and CustomerData.

To interact with your Pega Platform database, Pega Cloud provides Schema Tools, Query Runner, and Query Inspector, and dynamic system settings for database retries. You can also use standard Pega Platform functions configure database tables (for example increase column length, create a table, or insert records into a table). Additionally, you can update records in the Pega Platform database by writing Java code or using ExecuteRDB SQL run through an Activity. Pega also can help you to identify possible database optimizations that could improve system performance, minimize database size, and improve resource use.

Pega Cloud-only Query Runner, Query Inspector, and Schema Tools for the Pega Platform database

A Pega Platform instance within Pega Cloud Services uses an internal database. You can interact with the database through Query Runner, Query Inspector, and Schema Tools after enabling them on your instance of Pega Platform. These tools offer functionality for managing your internal database to provide the same experience as on an on-premises system. Access to these tools requires the PegaRULES:DatabaseAdministrator role in your access group.

  • Query Runner offers options to retrieve data that you pull from your Pega Platform database by using SELECT SQL statements. Query Runner is optimized to use SELECT statements only (instead of other types of SQL statements) for operators with read-only access to the database for the fastest return on your query.
  • Query Inspector improves the SELECT statements that are used through the Query Runner. SELECT statements that you enter into the Query Runner generate the steps in the query statement through an EXPLAIN PLAN output. Use the EXPLAIN PLAN to improve query efficiency.
  • Schema Tools extends a robust set of tools to administer your Pega Platform database, including viewing schema, increasing column size, adding or deleting indexes, and optimizing tables.
Managing SQL queries with Query Runner and Query Inspector

Query Runner and Query Inspector offer the following Pega Cloud-only functionality for interacting with your internal database. To learn how to manage SQL queries with Query Runner and Query Inspector, see the corresponding articles for each database task.

Database task Article
Run SQL queries  Running SQL queries on Pega Cloud
View SQL query history Viewing previously run queries
Export SQL queries Exporting previously run query results
Analyze SQL queries with EXPLAIN PLAN Using Query Inspector to improve SQL queries
Viewing database schema and interacting with tables using Schema Tools

Schema Tools offers the following Pega Cloud-only functionality for interacting with your internal database. To learn how to view database schemas, see the corresponding articles for each database task.

Database task Article
View database schema Viewing database schema information
Increase column length  Increasing column lengths
View column BLOB size Viewing column BLOB size
Collect table statistics Updating statistics
Schedule BLOB size and table statistic updates Scheduling schema updates
Defragment tables Defragmenting tables
Create and remove indexes Adding and deleting database indexes
View the history of actions taken using Schema Tools Viewing history of Schema Tools actions

Pega Cloud-only dynamic system settings for database retries

Pega Cloud Services permits changing only the parameters for database retries to the internal Pega Platform database. Pega Cloud Services does not permit you to edit any other parameter for the internal Pega Platform database.

Pega Cloud Services clients can change the number of times Pega Platform retries a connection attempt to the internal database before timing out. Changing the number of retries to the internal database can be useful during troubleshooting scenarios. To edit the number of retry attempts Pega Platform makes to each schema for the internal Pega Platform database, create, open, and change the value for the following dynamic system settings:

  • database/databases/PegaRULES/retryAttempts
  • database/databases/PegaDATA/retryAttempts

A value of 0 turns off retry attempts to the internal Pega Platform database. Pega Platform defaults to 3 retries for each schema.

For more information about creating a dynamic system setting, see Creating a dynamic system setting.

Pega Platform database management in Pega Cloud

Pega Platform gives you a range of capabilities to update your database schema, add or delete columns, insert database tables, and update records on your internal Pega Platform database. 

The following articles describe the Pega Platform tasks that are required for Pega Cloud clients to perform the listed standard database operations.

Database task Article
Add a database column
Delete a database column
Increase database column length
Altering a column type
Creating a database table
Inserting records into the database
Updating records on the database
Deleting records from the database
Optimizing the database schema
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