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Mail SQL Driver Attributes

The SQL driver for Mail has many attributes that can be finetuned to improve handling in scenarios with unreliable network connections to the API server of Mail or high volumes of data. Also, many drivers have driver-specific attributes to finetune actual behaviour or handle data not matching specifications.

The Mail driver attributes are assigned a default value which seldom requires change. However, changes can be applied when needed on four levels, which are reflected in the table below by separate checkmarks:

Connection string: the connection string from the settings*.xml file and applied during log on.

Set SQL statement: a set SQL-statement to be executed once connection has been established.

Log on: value to be specified interactively by user during log on in a user interface.

The connection string for Mail can be found in the settings*.xml file used for the database. The reference manuals contain instructions how to relocate the settings*.xml files. Settings*.xml files are typically located in the %USERPROFILE%\invantive folder in most deployment scenarios. Each data container of a database in the connection string can have a connectionString element specifying the name and values of attributes. Both name and value must be properly escaped according to XML-semantics. Actual application of the value is solely done during log on. A new connection must be established to change the value of a driver attribute using a connection string.

The set SQL statement can be executed after log on. The syntax is: set NAME VALUE, or for a distributed database: set NAME@ALIAS VALUE. In some scenarios you may need to enclose the driver attribute name in square brackets to escape it from parsing, for instance when a reserved SQL keyword is part of the name. The new value takes effect straight after execution of the set-statement. The set-statement can be executed as often as needed during a session.

Driver attributes that can be interactively set to a value are typically presented in the log on window. Depending on the platform and design decisions of the user interface designer, some or all of the available driver attributes can have been made available.

The Mail driver can be configured using the following attributes:

Code

Description

Origin

Default Value

Set from Connection String

Set from Set SQL-Statement

Set from Drivers File

Set from Log On

analysis-enforce-row-uniqueness

Enforce rows to be unique for software analysis. A fingerprint is calculated from the whole row of data when the primary key column is unknown.

Shared

False

 

bulk-delete-page-size-rows

Number of rows to delete per batch when bulk deleting.

Shared

10000

 

bulk-insert-page-size-bytes

Approximate maximum size in bytes of batch when bulk inserting.

Shared

10000000

 

bulk-insert-page-size-rows

Number of rows to insert per batch when bulk inserting.

Shared

10000

 

force-case-sensitive-identifiers

Consider identifiers as case-sensitive independent of the platform capabilities.

Shared

False

 

forced-casing-identifiers

Forced casing of identifiers. Choose from: Unset, Lower, Upper and Mixed.

Shared

 

 

invantive-sql-compress-sparse-arrays

Whether to compress sparse arrays in result sets during compression.

SQL Engine V1

True

 

invantive-sql-correct-invalid-date

Whether to correct dates considered invalid since they are before 01-01-1753. When nullable, they are removed. Otherwise they are replaced by 01-01-1753.

SQL Engine V1

False

 

invantive-sql-forward-filters-to-data-containers

Whether to forward filters to data containers.

SQL Engine V1

True

 

invantive-sql-share-byte-arrays

Whether to share the memory used by identical byte arrays in result sets during compression.

SQL Engine V1

True

 

invantive-sql-share-strings

Whether to share the memory used by identical strings in result sets during compression.

SQL Engine V1

True

 

invantive-sql-shuffle-fetch-results-data-containers

Whether to shuffle results fetched from data containers.

SQL Engine V1

False

 

invantive-use-cache

Whether to cache the results of a query.

SQL Engine V1

True

 

log-native-calls-to-disk-max-events

Maximum number of call events to register from last activation.

Shared

 

 

log-native-calls-to-disk-max-seconds

Maximum number of seconds to register calls from last activation.

Shared

 

 

log-native-calls-to-disk-on-error

Registers native calls to data container backend as disk files when the call raised an error.

Shared

False

 

log-native-calls-to-disk-on-success

Registers native calls to data container backend as disk files when the call raised no error.

Shared

False

 

log-native-calls-to-trace

Log native calls to data container backend on the trace.

Shared

False

 

mail-body-html

Whether the mail body is HTML.

Mail

 

 

mail-from-email

The default FROM email address.

Mail

 

 

mail-from-name

The default FROM name.

Mail

 

 

mail-priority

Priority of the mail; negative is bulk, 0 is neutral, positive is urgent.

Mail

 

 

mail-reply-to-email

The default REPLY TO email address.

Mail

 

 

mail-reply-to-name

The default REPLY TO name.

Mail

 

 

maximum-length-identifiers

Non-default maximum length in characters of identifier names.

Shared

 

 

max-url-length-accepted

The maximum accepted URL length before raising an error.

Shared

8000

 

max-url-length-desired

The maximum desired URL length.

Shared

8000

 

partition-slot-based-rate-limit-length-ms

Total length in milliseconds across all slots of a partition-based rate limit.

Shared

60000

 

 

partition-slot-based-rate-limit-slots

Number of slots per partition-based rate limit. Null means no slot-based rate limit.

Shared

 

 

 

pre-request-delay-ms

Pre-request delay in milliseconds per request.

Shared

0

 

requested-page-size

Preferred number of rows to exchange per round trip; only effective on limited platforms such as AFAS Online.

Shared

 

 

requests-parallel-max

Maximum number of parallel data requests from individual partitions on the data container.

Shared

32

 

slot-based-rate-limit-length-ms

Total length in milliseconds across all slots of a slot-based rate limit.

Shared

60000

 

 

slot-based-rate-limit-slots

Number of slots of a slot-based rate limit. Null means no slot-based rate limit.

Shared

 

 

 

smtp-enable-ssl

Set whether SSL is enabled for SMTP connections.

Mail

False

 

smtp-host-address

The default SMTP host address to use.

Mail

 

 

smtp-host-port-number

The default SMTP host post number to use.

Mail

 

 

smtp-max-parallel

Maximum number of concurrent SMTP requests.

Mail

32

 

smtp-minimum-deliver-duration-ms

Minimum deliver duration in milliseconds for the SMTP send plus inserted sleep when SMTP send finished earlier than the minimum. The value is applied per parallel thread.

Mail

 

 

smtp-password

The default SMTP password to authenticate with.

Mail

 

 

smtp-send-timeout-ms

Timeout in milliseconds after which the SMTP send times out.

Mail

 

 

smtp-user-name

The default SMTP user name to authenticate with.

Mail

 

 

standardize-identifiers

Rewrite all identifiers to the preferred standards as configured by standardize-identifiers-casing and maximum-length-identifiers.

Shared

True

 

standardize-identifiers-casing

Rewrite all identifiers to the recommended standard platform-specific casing when changing a data model on a case-dependent platform.

Shared

True

 

 

16-08-2023 20:09 Version 22.1.262-BETA+4120

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