SQL/MX 3.2.1 Reference Manual (H06.26+, J06.15+)

Metadata Tables
HP NonStop SQL/MX Release 3.2.1 Reference Manual—691117-005
10-46
Default Attributes
QUERY_CACHE Controls the maximum
amount of memory that
the SQL/MX compiler is
allowed to use for holding
the cached plans of
previously compiled
queries.
Query Plan Caching on
page 10-73
QUERY_CACHE_MAX_VICTIMS
Limits the number of
entries that an unusually
large query plan is
allowed to displace from
the cache.
Query Plan Caching on
page 10-73
QUERY_CACHE_REQUIRED_
PREFIX_KEYS
Determines how many
and which columns of a
composite primary or
partition key are required
for an equality key
predicate to be
considered cacheable.
Query Plan Caching
on
page 10-73
QUERY_CACHE_STATEMENT_
PINNING
Controls the pinning and
unpinning of query cache
entries.
Query Plan Caching on
page 10-73
READONLY_CURSOR
Controls whether FOR
UPDATE is required for
cursor declarations for
columns to be updatable.
Row Maintenance on
page 10-75
RECOMPILE_ON_
PLANVERSION_ERROR
Determines whether a
statement is recompiled if
its access plan is no
longer valid at run time
due to versioning errors.
Statement
Recompilation on
page 10-78
RECOMPILATION_ WARNINGS
Determines whether a
warning is returned when
a statement is dynamically
recompiled.
Statement
Recompilation on
page 10-78
REF_CONSTRAINT_NO_
ACTION_LIKE_RESTRICT
Determines how NonStop
SQL/MX handles
referential action in
ALTER TABLE and
CREATE TABLE
statements.
Referential Action on
page 10-75
REMOTE_ESP_ALLOCATION
Identifies the scope the
optimizer considers when
determining the active
systems.
Query Optimization and
Performance on
page 10-66
Attribute (page 7 of 9) Description Category