Customizing the Caché Environment

In this section:

The Adapter for Caché provides several parameters for customizing the environment and optimizing performance.


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Specifying a Timeout Limit

How to:

TIMEOUT specifies the number of seconds the adapter will wait for a response after you issue an SQL request to Caché.



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Syntax: How to Issue the TIMEOUT Command
ENGINE SQLISM SET TIMEOUT {nn|0}

where:

SQLISM

Indicates the adapter. You can omit this value if you previously issued the SET SQLENGINE command.

nn

Is the number of seconds before a time-out occurs. 30 is the default value.

0

Represents an infinite period to wait for a response.


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Obtaining the Number of Rows Updated or Deleted

How to:

PASSRECS returns the number of rows affected by a successfully executed SQL Passthru INSERT, UPDATE, or DELETE command.

Tip: You can change this setting manually or from the Web Console by clicking Data Adapters on the menu bar, clicking a configured adapter, and choosing Change Settings from the menu. The Change Settings pane opens.



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Syntax: How to Obtain the Number of Rows Updated or Deleted
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ENGINE SQLISM SET PASSRECS {ON|OFF}

where:

SQLISM

Indicates the adapter. You can omit this value if you previously issued the SET SQLENGINE command.

ON

Provides the number of rows affected in the application program SCB count member after the successful execution of an SQL Passthru INSERT, UPDATE, or DELETE command. ON is the default value.

OFF

Provides no information after the successful execution of an SQL Passthru INSERT, UPDATE, or DELETE command.


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Specifying the Transaction Isolation Level

How to:

You can specify the transaction isolation level from the Web Console or using the SET ISOLATION command.



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Syntax: How to Specify Transaction Isolation Level From a SET Command
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You can specify transaction isolation level by issuing the following command

ENGINE SQLISM SET ISOLATION {RU|RC|RR|SE}

where:

SQLISM

Indicates the adapter. You can omit this value if you previously issued the SET SQLENGINE command.

RU

Sets the transaction isolation level to Read Uncommitted.

RC

Sets the transaction isolation level to Read Committed.

RR

Sets the transaction isolation level to Repeatable Read.

SE

Sets the transaction isolation level to Serializable Read.


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