1.0

Table Of Contents
persist-dd
Enables or disables disk persistence for the data dictionary. By default, all data stores (SQLFire members booted with
host-data=true) set this value to "true" to enable persistence. All SQLFire data stores in the same cluster must use the same
persistence setting.
When persistence is enabled, if all data stores in a cluster are down, then clients cannot execute DDL statements in the
cluster until a data store becomes available. This ensures that the persisent data dictionary can be recovered when the nal
data store rejoins the cluster.
Description
Note: You cannot enable persistence for SQLFire accessors (members that booted with host-data=false).
When persist-dd is set to "false," then no tables can be declared as persistent. However, overow can still be congured
if you explicitly dene the sys-disk-dir attribute.
When a new SQLFire member joins an existing cluster, the data dictionary is obtained either from other members, or it is
retrieved from persisted data if the new member is determined to have to most current copy of the data in the cluster.
Optimizing Availability and Performance on page 77 provides more information about starting and shutting down SQLFire
clusters that utilize disk stores for persistence.
trueDefault Value
connection (boot)Property Type
sqlre.Prex
redundancy-zone
Denes this member's redundancy zone. Used to separate members into different groups for satisfying
partitioned table redundancy. If this property is set, SQLFire does not put redundant copies of data in
members with the same redundancy zone setting.
Description
not setDefault Value
connection (boot)Property Type
gemre.Prex
security-log-file
Used with authentication. The log le for security log messages. If not specied, the member's
regular log le is used.
Description
not setDefault Value
connection (boot)Property Type
gemre.Prex
security-log-level
Used with authentication. Logging level detail for security log messages.
Valid values from lowest to highest are ne, cong, info, warning, error, severe, and none.
Description
congDefault Value
vFabric SQLFire User's Guide316
vFabric SQLFire Reference