Character Set and Case Sensitivity of SRVCTL Object Values

SRVCTL interacts with many different types of objects. The character set and name length limitations, and whether the object name is case sensitive, can vary between object types.

Table: String Restrictions for SRVCTL Object Names

Object Type	Character Set Limitations	Case Sensitive?	Maximum Length
db_domain	Alpha-numeric characters, underscore (_), and number sign (#)	No	128 characters
db_unique_name	Alpha-numeric characters, underscore (_), number sign (#), and dollar sign ($); the first 8 characters must be unique because those characters are used to form instance names	No	30 characters but the first 12 characters must be unique relative to any other database in the same cluster
pdb_name	Alpha-numeric characters and underscore (_); the first character must be an alphabet character	No	30 characters
diskgroup_name	Naming disk groups have the same limitations as naming other database objects.	No (all names are converted to uppercase)	30 characters
instance_name	Alphanumeric characters	Depends on the platform	15 characters
listener_name	Alphanumeric characters	Depends on the platform	15 characters
node_name	Alphanumeric characters	No	15 characters
scan_name	The first character must be an alphabetic character	No	15 characters
service_name	Alphanumeric characters, underscore (_), number sign (#), period (.), and dollar sign ($); the name cannot begin with a period, nor contain single quotation marks ( '' )	No	250 characters
volume_name	Alphanumeric characters; dashes (-) are not allowed and the first character must be an alphabetic character.	No	11 characters