GLOBAL_TXN_PROCESSES

Property	Description
Parameter type	Integer
Default value	`1`
Modifiable	`ALTER SYSTEM`
Range of values	`1` to `20`
Basic	No
Real Application Clusters	Multiple instances can have different values.

GLOBAL_TXN_PROCESSES specifies the initial number of GTXn background processes (GTX0, ... GTX9 and GTXa, ... GTXj) per instance to support global (XA) transactions in an Oracle RAC environment.

GLOBAL_TXN_PROCESSES is useful for systems that process global (XA) transactions heavily. You do not need to specify a value for this parameter since Oracle Database automatically determines the number of processes and autotunes them, as necessary. GTXn background processes are only seen in an Oracle RAC environment.