PolarDB:Release notes on modified default values for some parameters

The default values of some parameters in PolarDB for PostgreSQL(Compatible with Oracle) are modified. The modifications are valid only for new clusters. New default values can significantly improve the performance of databases. You can modify the default values in the console.

The default values are modified for the following parameters.

Parameter	Original default value	New default value	Description
log_statement	all	ddl	Specifies the level of audit logs. Default value: ddl, which indicates that only logs for DDL statements are audited. Displaying less logs can improve database performance. Note You can enable the audit log feature on the SQL Explorer page of the console. Then, logs for all SQL statements are audited. For more information, see SQL Explorer. You can execute the following statement to view the settings of this parameter for the current cluster: show log_statement;