DDL_LOCK_TIMEOUT

Property	Description
Parameter type	Integer
Default value	`0`
Modifiable	`ALTER SESSION`
Range of values	0 to 1,000,000 (in seconds)
Basic	No

DDL_LOCK_TIMEOUT specifies a time limit for how long DDL statements will wait in a DML lock queue. The default value of zero indicates a status of NOWAIT. The maximum value of 1,000,000 seconds will result in the DDL statement waiting forever to acquire a DML lock.

If a lock is not acquired before the timeout period expires, then an error is returned.