On, Off

On

Can be set for an individual connection or for the PUBLIC group. Takes effect immediately.

If the blocking option is set to On, any transaction attempting to obtain a lock that conflicts with an existing lock held by another transaction waits until every conflicting lock is released or until the blocking_timeout is reached. If the lock is not released within blocking_timeout milliseconds, then an error is returned for the waiting transaction. If the blocking option is set to Off, the transaction that attempts to obtain a conflicting lock receives an error.

The value for the blocking connection property can be temporarily set to Off during certain operations (for example, refreshing a materialized view), which can then cause an error. See User '%1' has the row in '%2' locked.

• blocking_timeout option
• The blocking option
• blocking connection property