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title=create-jdbc-connection-pool
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~~~~~~
= create-jdbc-connection-pool
[[create-jdbc-connection-pool-1]][[GSRFM00036]][[create-jdbc-connection-pool]]
== create-jdbc-connection-pool
Registers a JDBC connection pool
[[sthref320]]
=== Synopsis
[source]
----
asadmin [asadmin-options] create-jdbc-connection-pool [--help]
[--datasourceclassname=datasourceclassname]
[--restype=resourcetype]
[--steadypoolsize=poolsize]
[--maxpoolsize=maxpoolsize]
[--maxwait=maxwaittime]
[--poolresize=poolresizelimit]
[--idletimeout=idletimeout]
[--initsql=initsqlstring]
[--isolationlevel=isolationlevel]
[--isisolationguaranteed={true|false}]
[--isconnectvalidatereq={false|true}]
[--validationmethod=validationmethod]
[--validationtable=validationtable]
[--failconnection={false|true}]
[--allownoncomponentcallers={false|true}]
[--nontransactionalconnections={false|true}]
[--validateatmostonceperiod=validationinterval]
[--leaktimeout=leaktimeout]
[--leakreclaim={false|true}]
[--statementleaktimeout=satementleaktimeout]
[--statmentleakreclaim={false|true}]
[--creationretryattempts=creationretryattempts]
[--creationretryinterval=creationretryinterval]
[--sqltracelisteners=sqltracelisteners[,sqltracelisteners]]
[--statementtimeout=statementtimeout]
[--lazyconnectionenlistment={false|true}]
[--lazyconnectionassociation={false|true}]
[--associatewiththread={false|true}]
[--driverclassname=jdbcdriverclassname]
[--matchconnections={false|true}]
[--maxconnectionusagecount=maxconnectionusagecount]
[--ping={false|true}]
[--pooling={false|true}]
[--statementcachesize=statementcachesize]
[--validationclassname=validationclassname]
[--wrapjdbcobjects={false|true}]
[--description description]
[--property name=value)[:name=value]*]
[--target=target]
connectionpoolid
----
[[sthref321]]
=== Description
The `create-jdbc-connection-pool` subcommand registers a new Java
Database Connectivity ("JDBC") software connection pool with the
specified JDBC connection pool name.
A JDBC connection pool with authentication can be created either by
using a `--property` option to specify user, password, or other
connection information, or by specifying the connection information in
the XML descriptor file.
This subcommand is supported in remote mode only.
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=== Options
asadmin-options::
Options for the `asadmin` utility. For information about these
options, see the link:asadmin.html#asadmin-1m[`asadmin`(1M)] help page.
`--help`::
`-?`::
Displays the help text for the subcommand.
`--datasourceclassname`::
The name of the vendor-supplied JDBC datasource resource manager. An
XA or global transactions capable datasource class will implement the
`javax.sql.XADatasource` interface. Non-XA or exclusively local
transaction datasources will implement the `javax.sql.Datasource`
interface.
`--restype`
+
Required when a datasource class implements two or more interfaces
(`javax.sql.DataSource`, `javax.sql.XADataSource`, or
`javax.sql.ConnectionPoolDataSource`), or when a driver classname must
be provided.::
* If `--restype` = `java.sql.Driver`, then the `--driverclassname`
option is required.
* If `--restype` = `javax.sql.DataSource`, `javax.sql.XADataSource`,
or `javax.sql.ConnectionPoolDataSource`, then the
`--datasourceclassname` option is required.
* If `--restype` is not specified, then either the `--driverclassname`
or `--datasourceclassname` option must be specified, but not both.
`--steadypoolsize`::
The minimum and initial number of connections maintained in the pool.
The default value is 8.
`--maxpoolsize`::
The maximum number of connections that can be created. The default
value is 32.
`--maxwait`::
The amount of time, in milliseconds, that a caller will wait before a
connection timeout is sent. The default is 60000 (60 seconds). A value
of 0 forces the caller to wait indefinitely.
`--poolresize`::
Number of connections to be removed when `idle-timeout-in-seconds`
timer expires. This is the quantity by which the pool will scale up or
scale down the number of connections. Scale up: When the pool has no
free connections, pool will scale up by this quantity. Scale down: All
the invalid and idle connections are removed, sometimes resulting in
removing connections of quantity greater than this value. Connections
that have been idle for longer than the timeout are candidates for
removal. Steadypoolsize will be ensured. Possible values are from 0 to
`MAX_INTEGER`. The default value is 2.
`--idletimeout`::
The maximum time, in seconds, that a connection can remain idle in the
pool. After this time, the implementation can close this connection.
This timeout value must be kept shorter than the database server side
timeout value to prevent the accumulation of unusable connections in
the application. The default value is 300.
`--initsql`::
An SQL string that is executed whenever a connection is created from
the pool. If an existing connection is reused, this string is not
executed. Connections that have idled for longer than the timeout are
candidates for removal. This option has no default value.
`--isolationlevel`::
The transaction-isolation-level on the pooled database connections.
This option does not have a default value. If not specified, the pool
operates with the default isolation level that the JDBC driver
provides. You can set a desired isolation level using one of the
standard transaction isolation levels: `read-uncommitted`,
`read-committed`, `repeatable-read`, `serializable`. Applications that
change the isolation level on a pooled connection programmatically
risk polluting the pool. This could lead to program errors.
`--isisolationguaranteed`::
This is applicable only when a particular isolation level is specified
for transaction-isolation-level. The default value is true. +
This option assures that every time a connection is obtained from the
pool, isolation level is set to the desired value. This could have
some performance impact on some JDBC drivers. Administrators can set
this to false when the application does not change `--isolationlevel`
before returning the connection.
`--isconnectvalidatereq`::
If set to true, connections are validated or checked to see if they
are usable before giving out to the application. The default value is
false.
`--validationmethod`::
Type of validation to be performed when
`is-connection-validation-required` is true. Valid settings are:
`auto-commit`, `meta-data`, `table`, or `custom-validation`. The
default value is `table`.
`--validationtable`::
The name of the validation table used to perform a query to validate a
connection. If `is-connection-validation-required` is set to true and
connection-validation-type set to table, this option is mandatory.
`--failconnection`::
If set to true, all connections in the pool must be closed when a
single validation check fails. The default value is false. One attempt
is made to reestablish failed connections.
`--allownoncomponentcallers`::
A pool with this property set to true can be used by non-Jakarta EE
components, that is, components other than EJBs or Servlets. The
returned connection is enlisted automatically with the transaction
context obtained from the transaction manager. Connections obtained by
non-component callers are not automatically cleaned by the container
at the end of a transaction. These connections need to be explicitly
closed by the caller.
`--nontransactionalconnections`::
A pool with this property set to true returns non-transactional
connections. This connection does not get automatically enlisted with
the transaction manager.
`--validateatmostonceperiod`::
Specifies the time interval in seconds between successive requests to
validate a connection at most once. Setting this attribute to an
appropriate value minimizes the number of validation requests by a
connection. Default value is 0, which means that the attribute is not
enabled.
`--leaktimeout`::
Specifies the amount of time, in seconds, for which connection leaks
in a connection pool are to be traced. When a connection is not
returned to the pool by the application within the specified period,
it is assumed to be a potential leak, and stack trace of the caller
will be logged. This option only detects if there is a connection
leak. The connection can be reclaimed only if
`connection-leak-reclaim` is set to true. +
If connection leak tracing is enabled, you can use the Administration
Console to enable monitoring of the JDBC connection pool to get
statistics on the number of connection leaks. The default value is 0,
which disables connection leak tracing.
`--leakreclaim`::
Specifies whether leaked connections are restored to the connection
pool after leak connection tracing is complete. Possible values are as
follows:
`false`;;
Leaked connections are not restored to the connection pool
(default).
`true`;;
Leaked connections are restored to the connection pool.
`--statementleaktimeout`::
Specifies the amount of time, in seconds, after which any statements
that have not been closed by an application are to be detected.
Applications can run out of cursors if statement objects are not
properly closed. This option only detects if there is a statement
leak. The statement can be reclaimed only if `statement-leak-reclaim`
is set to true. The leaked statement is closed when it is reclaimed. +
The stack trace of the caller that creates the statement will be
logged when a statement leak is detected. If statement leak tracing is
enabled, you can use the Administration Console to enable monitoring
of the JDBC connection pool to get statistics on the number of
statement leaks. The default value is 0, which disables statement leak tracing. +
The following limitations apply to the statement leak timeout value:
* The value must be less than the value set for the connection `leak-timeout`.
* The value must be greater than the value set for `statement-timeout`.
`--statementleakreclaim`::
Specifies whether leaked statements are reclaimed after the statements
leak. Possible values are as follows:
`false`;;
Leaked statements are not reclaimed (default).
`true`;;
Leaked statements are reclaimed.
`--creationretryattempts`::
Specifies the maximum number of times that {productName} retries
to create a connection if the initial attempt fails. The default value
is 0, which specifies that {productName} does not retry to create
the connection.
`--creationretryinterval`::
Specifies the interval, in seconds, between successive attempts to
create a connection. +
If `--creationretryattempts` is 0, the `--creationretryinterval`
option is ignored. The default value is 10.
`--sqltracelisteners`::
A list of one or more custom modules that provide custom logging of
database activities. Each module must implement the
`org.glassfish.api.jdbc.SQLTraceListener` public interface. When set
to an appropriate value, SQL statements executed by applications are
traced. This option has no default value.
`--statementtimeout`::
Specifies the length of time in seconds after which a query that is
not completed is terminated. +
A query that remains incomplete for a long period of time might cause
the application that submitted the query to hang. To prevent this
occurrence, use this option set a timeout for all statements that will
be created from the connection pool that you are creating. When
creating a statement, {productName} sets the `QueryTimeout`
property on the statement to the length of time that is specified. The
default value is -1, which specifies that incomplete queries are never
terminated.
`--lazyconnectionenlistment`::
Specifies whether a resource to a transaction is enlisted only when a
method actually uses the resource. Possible values are as follows:
`false`;;
Resources to a transaction are always enlisted and not only when a
method actually uses the resource (default).
`true`;;
Resources to a transaction are enlisted only when a method actually
uses the resource.
`--lazyconnectionassociation`::
Specifies whether a physical connection should be associated with the
logical connection only when the physical connection is used, and
disassociated when the transaction is completed. Such association and
dissociation enable the reuse of physical connections. Possible values
are as follows:
`false`;;
A physical connection is associated with the logical connection even
before the physical connection is used, and is not disassociated
when the transaction is completed (default).
`true`;;
A physical connection is associated with the logical connection only
when the physical connection is used, and disassociated when the
transaction is completed. The `--lazyconnectionenlistment` option
must also be set to `true`.
`--associatewiththread`::
Specifies whether a connection is associated with the thread to enable
the thread to reuse the connection. If a connection is not associated
with the thread, the thread must obtain a connection from the pool
each time that the thread requires a connection. Possible values are
as follows:
`false`;;
A connection is not associated with the thread (default).
`true`;;
A connection is associated with the thread.
`--driverclassname`::
The name of the vendor-supplied JDBC driver class. This driver should
implement the `java.sql.Driver` interface.
`--matchconnections`::
Specifies whether a connection that is selected from the pool should
be matched by the resource adaptor. If all the connections in the pool
are homogenous, a connection picked from the pool need not be matched
by the resource adapter, which means that this option can be set to
false. Possible values are as follows:
+
`false`;;
A connection should not be matched by the resource adaptor
(default).
`true`;;
A connection should be matched by the resource adaptor.
`--maxconnectionusagecount`::
Specifies the maximum number of times that a connection can be reused.
When this limit is reached, the connection is closed. By limiting the
maximum number of times that a connection can be reused, you can avoid
statement leaks. +
The default value is 0, which specifies no limit on the number of
times that a connection can be reused.
`--ping`::
Specifies if the pool is pinged during pool creation or
reconfiguration to identify and warn of any erroneous values for its
attributes. Default value is false.
`--pooling`::
Specifies if connection pooling is enabled for the pool. The default
value is true.
`--statementcachesize`::
The number of SQL statements to be cached using the default caching
mechanism (Least Recently Used). The default value is 0, which
indicates that statement caching is not enabled.
`--validationclassname`::
The name of the class that provides custom validation when the value
of `validationmethod` is `custom-validation`. This class must
implement the `org.glassfish.api.jdbc.ConnectionValidation` interface,
and it must be accessible to {productName}. This option is
mandatory if the connection validation type is set to custom
validation.
`--wrapjdbcobjects`::
Specifies whether the pooling infrastructure provides wrapped JDBC
objects to applications. By providing wrapped JDBC objects, the
pooling infrastructure prevents connection leaks by ensuring that
applications use logical connections from the connection pool, not
physical connections. The use of logical connections ensures that the
connections are returned to the connection pool when they are closed.
However, the provision of wrapped JDBC objects can impair the
performance of applications. The default value is true. +
The pooling infrastructure provides wrapped objects for
implementations of the following interfaces in the JDBC API:
* `java.sql.CallableStatement`
* `java.sql.DatabaseMetaData`
* `java.sql.PreparedStatement`
* `java.sql.ResultSet`
* `java.sql.Statement`
+
Possible values of `--wrapjdbcobjects` are as follows:
`false`;;
The pooling infrastructure does not provide wrapped JDBC objects to
applications. (default).
`true`;;
The pooling infrastructure provides wrapped JDBC objects to
applications.
`--description`::
Text providing details about the specified JDBC connection pool.
`--property`::
Optional attribute name/value pairs for configuring the pool. The
following properties are available:
`user`;;
Specifies the user name for connecting to the database.
`password`;;
Specifies the password for connecting to the database.
`databaseName`;;
Specifies the database for this connection pool.
`serverName`;;
Specifies the database server for this connection pool.
`port`;;
Specifies the port on which the database server listens for
requests.
`networkProtocol`;;
Specifies the communication protocol.
`roleName`;;
Specifies the initial SQL role name.
`datasourceName`;;
Specifies an underlying `XADataSource`, or a
`ConnectionPoolDataSource` if connection pooling is done.
`description`;;
Specifies a text description.
`url`;;
Specifies the URL for this connection pool. Although this is not a
standard property, it is commonly used.
`dynamic-reconfiguration-wait-timeout-in-seconds`;;
Used to enable dynamic reconfiguration of the connection pool
transparently to the applications that are using the pool, so that
applications need not be re-enabled for the attribute or property
changes to the pool to take effect. Any in-flight transaction's
connection requests will be allowed to complete with the old pool
configuration as long as the connection requests are within the
timeout period, so as to complete the transaction. New connection
requests will wait for the pool reconfiguration to complete and
connections will be acquired using the modified pool configuration.
`LazyConnectionEnlistment`;;
Deprecated. Use the equivalent attribute. The default value is
false.
`LazyConnectionAssociation`;;
Deprecated. Use the equivalent attribute. The default value is
false.
`AssociateWithThread`;;
Deprecated. Use the equivalent attribute. The default value is
false.
`MatchConnections`;;
Deprecated. Use the equivalent attribute. The default value is true.
`Prefer-Validate-Over-Recreate`;;
Specifies whether pool resizer should validate idle connections
before destroying and recreating them. The default value is true.
`time-to-keep-queries-in-minutes`;;
Specifies the number of minutes that will be cached for use in
calculating frequently used queries. Takes effect when SQL tracing
and monitoring are enabled for the JDBC connection pool. The default
value is 5 minutes.
`number-of-top-queries-to-report`;;
Specifies the number of queries to list when reporting the top and
most frequently used queries. Takes effect when SQL tracing and
monitoring are enabled for the JDBC connection pool. The default
value is 10 queries.
+
[NOTE]
====
If an attribute name or attribute value contains a colon, the
backslash (`\`) must be used to escape the colon in the name or value.
Other characters might also require an escape character. For more
information about escape characters in command options, see the
link:asadmin.html#asadmin-1m[`asadmin`(1M)] man page.
====
`--target`::
Do not specify this option. This option is retained for compatibility
with earlier releases. If you specify this option, a syntax error does
not occur. Instead, the subcommand runs successfully and displays a
warning message that the option is ignored.
[[sthref323]]
=== Operands
connectionpoolid::
The name of the JDBC connection pool to be created.
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=== Examples
[[GSRFM493]][[sthref325]]
==== Example 1   Creating a JDBC Connection Pool
This example creates a JDBC connection pool named `sample_derby_pool`.
[source]
----
asadmin> create-jdbc-connection-pool
--datasourceclassname org.apache.derby.jdbc.ClientDataSource
--restype javax.sql.XADataSource
--property portNumber=1527:password=APP:user=APP:serverName=
localhost:databaseName=sun-appserv-samples:connectionAttributes=\;
create\\=true sample_derby_pool
Command create-jdbc-connection-pool executed successfully
----
The escape character backslash (`\`) is used in the `--property` option
to distinguish the semicolon (`;`). Two backslashes (`\\`) are used to
distinguish the equal sign (`=`).
[[sthref326]]
=== Exit Status
0::
subcommand executed successfully
1::
error in executing the subcommand
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=== See Also
link:asadmin.html#asadmin-1m[`asadmin`(1M)]
link:delete-jdbc-connection-pool.html#delete-jdbc-connection-pool-1[`delete-jdbc-connection-pool`(1)],
link:list-jdbc-connection-pools.html#list-jdbc-connection-pools-1[`list-jdbc-connection-pools`(1)]