read_only

Description

read_only specifies whether the tenant is in read-only mode.

Privilege requirements

• Query variables

  sys tenants and all user tenants can execute the SHOW VARIABLES statement or query the SYS.TENANT_VIRTUAL_GLOBAL_VARIABLE view (Oracle-compatible mode) or the information_schema.GLOBAL_VARIABLES view (MySQL-compatible mode) to view the values of Global system variables.

• Modify variables

  • sys tenants can directly modify the values of Global system variables.

  • MySQL user tenants must have the SUPER or ALTER SYSTEM privilege to modify the values of Global system variables.

  • Oracle user tenants must have the ALTER SYSTEM privilege to modify the values of Global system variables.

Attributes

Usage notes

After this variable is set, all ordinary users in the tenant are affected, but root users are not.

Examples

Set the tenant to read/write mode.

obclient> SET GLOBAL read_only = OFF;