ABOUT "connecttion lifetime" and "clean thread"

Question

Hi expert, can you explain what "connection lifetime" and "clean thread" mean in JDBC Connector service to me ?thanks

Answer 1

Hi Justin,
Though I am no developer, here's what I found:
The JDBC Connector Service is a resource adapter based on the Java Database Connectivity (JDBC) standard to enable you to connect to databases. It creates, manages, and stores in a pool the DataSource objects that are used to obtain physical connections to a database.
Next comes a document type definition (DTD) which is used for producing XML files for the creation of DataSource objects. What you asked are elements used to define this DTD. Explanation is:
1. ELEMENT expiration-control (connection-lifetime, run-cleanup-thread)
Connection-lifetime element specifies a period in seconds, after which the connection expires.
Used in: expiration-control
2. ELEMENT run-cleanup-thread (#PCDATA)
Isolation-level element determines a transaction isolation level for the DataSource object. If you do not specify the isolation level, the system uses the default isolation level of the used database.
Used in: data-source
ELEMENT isolation-level (#PCDATA)
Sql-engine element defines what type of connection the system should return.
Valid values:
Open_SQL u2013 the system returns a DBI CommonConnection
Native_SQL u2013 the system returns a DBI DirectConnection
Vendor_SQL u2013 the system returns a standard connection from JDBC driver (not using DBI at all)
Used in: data-source
Please follow Link: [http://help.sap.com/saphelp_nw2004s/helpdata/en/64/0bee3da7138e5be10000000a114084/frameset.htm]
Please reward points if that helped.
regards, Sean.