If this property is not set, no value is sent to the server. The value for the
INFORMIXSTACKSIZE environment variable is used.
NODEFDAC
Specifies whether the database server prevents default table privileges
(SELECT, INSERT, UPDATE, and DELETE) from being granted to PUBLIC
when a new table is created during the current session, in a database that is
not ANSI compliant. The data type of this property is String. Possible values
are:
″yes″ The database server prevents default table privileges from being
granted to PUBLIC when a new table is created during the current
session, in a database that is not ANSI compliant.
″no″ The database server does not prevent default table privileges from
being granted to PUBLIC when a new table is created during the
current session, in a database that is not ANSI compliant. This is the
default.
OPTCOMPIND
Specifies the preferred method for performing a join operation on an ordered
pair of tables. The data type of this property is String. Possible values are:
″0″ The optimizer chooses a nested-loop join, where possible, over a
sort-merge join or a hash join.
″1″ When the isolation level is repeatable read, the optimizer chooses a
nested-loop join, where possible, over a sort-merge join or a hash join.
When the isolation level is not repeatable read, the optimizer chooses a
join method based on costs.
″2″ The optimizer chooses a join method based on costs, regardless of the
transaction isolation mode.
If this property is not set, no value is sent to the server. The value for the
OPTCOMPIND environment variable is used.
OPTOFC
Specifies whether to enable optimize-OPEN-FETCH-CLOSE functionality. The
data type of this property is String. Possible values are:
″0″ Disable optimize-OPEN-FETCH-CLOSE functionality for all threads of
applications.
″1″ Enable optimize-OPEN-FETCH-CLOSE functionality for all cursors in
all threads of applications.
If this property is not set, no value is sent to the server. The value for the
OPTOFCD environment variable is used.
PDQPRIORITY
Specifies the degree of parallelism that the database server uses. The
PDQPRIORITY value affects how the database server allocates resources,
including memory, processors, and disk reads. The data type of this property is
String. Possible values are:
″HIGH″
When the database server allocates resources among all users, it gives
as many resources as possible to queries.
″LOW″ or ″1″
The database server fetches values from fragmented tables in parallel.
236 Application Programming Guide and Reference for Java
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