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你可能喜欢DbVisualizer-6.5.7启动报错java.lang.NullPointerException 启动报错你解决没阿?解决了能不能分享下。_百度知道
DbVisualizer-6.5.7启动报错java.lang.NullPointerException 启动报错你解决没阿?解决了能不能分享下。
然后看涉及到的变量.lang.nullpointerexception表示使用了空引用,你看看报的哪行错误。一种情况是没实例化,即给对象赋值了一个不存在的对象  java。  空指针异常一般最好解决了。另一种情况是用框架时例如spring没有注入
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DbVisualizer
DbVisualizer is highly customizable. You can control formatting, layout
and the way DbVisualizer
interacts with databases. The default settings are good enough
for&normal use, but sometimes it is necessary to modify these
properties. This
chapter guides you through all the properties.
The Tool Properties window divides properties into two groups:
General Settings
These settings
control DbVisualizer in general, such as fonts, colors, data formats,
Database Settings
These settings
supported database type and define properties that are used in
database specific operations. When you set a database property in Tool
Properties, it applies to all database connections defined for
that database type. To set a property for one specific connection, use
the Connection Properties, available in the Object Details area when
select a connection.
user preferences
(XML) files
All properties are saved in XML files. The exact location of these
files is platform dependent. The location on your system is listed in
the first, General category, in the Tool Properties
window. These files
contains, in addition to all properties, also the information about
database connections, bookmarks, etc. We recommend that you do not edit
these files
even though it is quite easy to do so, even a simple typo of
an element name may cause problems. It's safer to edit all properties
from the DbVisualizer GUI.
DbVisualizer automatically creates a backup copy of the XML files when
the application is started. The location of these files is the same as
for the standard XML files, but a .bak
suffix is appended to the filename. The standard XML file might get
broken for various reasons not in control by DbVisualizer. If you see a
warning message that the XML file can not be read when you
launch DbVisualizer, simply copy the backup file to the
standard location and restart the application. If&you move the
XML file from its standard location, or if you remove it, DbVisualizer
will automatically create a new one.
the -prefsdir
command line argument is used to
identify an alternative directory for your user settings.
Export Settings
Sometimes it may be necessary
to migrate all your settings for DbVisualizer and import them in second
setup of DbVisualizer. This is very handy if you are migrating from one
machine to another,& or if you want to setup an exact copy on your
home computer, etc. Another key reason is for backup purposes. Loosing
all database connection configurations can be really
frustrating. The Export Settings feature is available from the File-&Export Settings main window
menu choice.
Figure: Export User Settings window
The default layout of the Export Settings window is that all settings
will be exported. Once you're done press OK and all settings will be
saved in the specified file. The structure of this JAR file is the same
as the content in your DbVisualizer settings directory.
The Relative File
Paths option will transform all path definitions in the exported
file relative to the DbVisualizer installation directory and your
personal settings directory. This is useful if you will import the
settings on another machine or share it with other users. Note that the
DbVisualizer version importing relative file paths must be 7.1 or later
to work properly (importing in earlier versions than 7.1 will not fail
but path information will be erroneous for things such as drivers,
favorites, etc.)
Import Settings
The Import Settings feature is used to import settings as previously
exported via the Export Settings feature. Import will examine the
content of the specified file and present the choices available.
Consider the previous screenshot and that we export the settings for
the Database Connections only. Here is how the Import Settings window will look:
Figure: Import User Settings window
Use the Target Location button
to set where the imported database connections will appear in the
objects tree.
The General settings tab collects all categories that are used to
control the general aspects of DbVisualizer.
Use the buttons at the bottom of the window when you have made some
changes: Click OK
to save the changes and close the window, the Apply
button to save the changes but keep the window open, and the Cancel
button to revert all changes. To reset the properties to the factory
defaults, use the Defaults
Changes are tracked on a per category basis. If you have made changes
and click on another category, you are asked whether the changes should
applied or not. When you click Defaults (for both
the General
and the Database
properties), you can reset either all properties or just the properties
for the currently selected category.
This is a screenshot of the General
category tree.
Properties window showing the tree with General categories
Appearance
Description
Look and Feel
Controls which look and feel to use.
Note 1: You must restart
DbVisualizer after you have selected a new look and feel.
Note 2: Some look and feels are
platform specific and do not appear on all OS'es
Metal (Ocean)
Icon Sizes
The Menus, Main Tool Bars, Sub Tool Bars
settings are used to control the size of the icons.
Show Tab Icons
Specifies whether an icon will appear in the header of all
object view tabs.
Individual fonts can be defined for SQL
Editors/Text Editors and Grids.
Application
Font settings
is used to control the font for all other
components in the user interface, such as labels. Increasing the
application font size
is useful at demos or presentations. Anti-Aliased Fonts is supported by
some look and feels and when enabled it gives a much smoother
appearance of text in the application.
In the SQL Editor, different font styles (colors, bold/italics) are
used for different kinds of text.
Figure: Fonts settings, with SQL Editor
Styles and SQL Editor Background
&Just select the kind of text you want to change the style for in
the list and enable or disable Bold and/or Italics, pick colors for
Background, Foreground etc.
In the SQL Editor Selection Background and SQL Editor Background
sections you can also pick background
colors for selections and for the editor itself, respectively.
You can define key bindings for almost all operations and editor
commands in DbVisualizer. Key bindings are grouped in Key Maps.
DbVisualizer includes a set of predefined key maps targeted for the
supported operating systems. These key maps cannot be deleted or
modified. To customize key bindings,&copy an existing key map
make your changes.
Figure: The key binding editor
All user defined key maps are stored in your $HOME/.dbvis/config70/keymaps
directory. A key map file contain only the differences between the
copied key map and the current.
To create a new key map, select the map you want to copy and click the Make
Copy button. Set a name on the new key map and activate it
with the Set Active button. The newly created key
map&now has the exact same key bindings as the parent key map.
Key maps must be uniquely named.
Figure: User defined&key map
The action list is organized in folders. The Editor Commands
folder lists all actions available in the SQL Editor and
their current key bindings. The Main Menu
folder contain sub folders, each representing a main window menu. The
other folders group feature specific actions, such as
actions to control the references graph, form editor, etc.
To modify the key bindings for an action, select the action from
the action&list. The current key bindings are listed in the Key
Bindings list.
Figure: User defined&key map
To add an additional key binding, press Add Key Binding
or press Edit Key Binding to edit the selection.
Figure: Key stroke dialog
The key stroke dialog controls whether a key binding is
assigned somewhere else. If there is a conflict with another binding,
the Conflicts are shows the names of
the actions that are conflicting. The modifier keys&Shift,
Ctrl and Command can be used to form the final key binding.
Menu items and tooltips shows the first defined key binding in the
Database Connection
Description
Ask When Creating Database Connection
If enabled, you will be asked if you want to use the Connection
Wizard to create new connections.
Run "Connect All" at Startup
If enabled, the Connect All operation is
automatically run when you launch
DbVisualizer, connecting all Database Connections marked as being
included in the Connect All operation (see the Database properties
further down for more on this).
Confirm "Disconnect All"
If enabled, a dialog to be displayed before disconnecting
all current database connections when using the Disconnect All
operation.
Specify here how many seconds
after which a database call that locks the GUI will time out
SSH Settings
When using an SSH tunnel for a database connection, you may use these
settings to configure some of the related behavior.
Description
SSH&Keep-Alive&Interval
With some SSH configurations,
the tunnel is dropped after a certain period of inactivity.
DbVisualizer sends keep-alive messages through the tunnel to prevent
this. Here you can set how often these messages should be sent, or set
the interval to 0 to disable this feature.
SSH Known Host File
When connecting to an SSH host, a warning dialog is
displayed if the host is not found in a known hosts file. This property
identifies the file to use for recording known hosts so that the
warning is only displayed the first time you connect, or if the IP
address of the host changes. We recommend that you specify the standard
SSH file used for this purpose, typically named known_hosts in the .ssh subfolder of your home folder.
SSH Authentication
How to deal with the SSH account information, see Authentication for details.
SSH Password/Passphrase
How to handle the SSH password
or private key passphrase, see
for details.
Driver Manager
The Driver Manager searches specified folders for JDBC drivers and
helps you make them available for use by DbVisualizer, see the Installing a JDBC Driver
chapter for details. In the Driver Manager
properties category, you can specify if you want the Driver Manager to
run automatically at start-up, when new files are discovered in the
specified driver folders, or when driver related errors are
encountered. You can also specify the folders to search and files to
exclude, if any.
Permissions
The Permission functionality is a security mechanism, where you can
specify that certain database operations must be confirmed. You
configure permissions per connection mode (Development, Test and
Production) for feature areas described in the following sections.
permission feature is part of DbVisualizer and does not replace the
authorization system in the actual database.
SQL Commander Permissions
For the SQL Commander, you can pick the permission type from a
drop-down list for each SQL command:
Permission Type
Description
This permission type means that you can run the SQL
statement without any confirmation
This permission type means that the SQL statement is not
executed at all.
This permission type means that when executing an SQL
statement, or a script of statements, the SQL Commander asks you
whether the actual SQL command(s) should be executed.
Figure: SQL Commander Permissions
Table Data Editing
Permissions
The permission types for the inline&editor are:
Permission Type
Description
A confirmation window is displayed, and you can accept the
operation or cancel it
No Confirm
The SQL operation is performed without any confirmation
Figure: Table Data Editor Permissions
In the Time Zone properties category, you can change the time zone for
the DbVisualizer process, and thereby how date and time data is
interpreted. DbVisualizer uses the OS time zone by default, which is
usually what you want to use.
Changing the time zone is only of interest if you work with a database
running with a different time zone than the time zone set on the client
where you run DbVisualizer. One example is when working with a database
that uses the UTC/GMT time zone to normalize all date/time data.
File Encoding
In the File Encoding category, you can set which file encoding
DbVisualizer uses by default when reading and writing files, e.g., SQL
scripts loaded into the SQL Commander or files with exported data. By
default, DbVisualizer uses the default encoding for your operating
system, and this is typically what you want. You only need to change
this setting if you often work with files in another encoding, or if
DbVisualizer can not find the default encoding for your operating
Data Formats
Description
Date Format
Specifies the
date format to use throughout the application (i.e., in
grids, forms and during editing). .
Time Format
Specifies the
time format to use throughout the application (i.e., in
grids, forms and during editing). .
Timestamp Format
Specifies the timestamp format to
use throughout the application (i.e., in
grids, forms and during editing). More information
Numbers Format
Specifies how numbers will be formatted.
Decimal Number Format
Specifies how decimal numbers will be formatted.
Boolean/BIT
Specifies the textual
representation of boolean values (true/false).
Null String
Specifies the
string representation of the null value. This string is the
readable form of null and appears in grids, forms, exports and during
Date, Time and
Timestamp formats
The lists for date, time and timestamp format
contain&collections of
formats. If these formats are not suitable, you can enter your own
format in the appropriate field. The tokens used to define the format
are listed in the right-click menu when the field has focus.
The date and time right click menu
The complete documentation for these tokens is available at the
web page: SimpleDateFormat.
Number formats
The lists for number and decimal number contain&collections of
formats. If these formats are not suitable, you can enter your own
format in the appropriate field. The tokens used to define the format
are listed in the right-click menu when the field has focus, and
complete documentation for these tokens is available at the following
web page: DecimalFormat.
Variables can be used in the SQL executed in the SQL Commander. Before
executing an SQL statement or connecting a
database connection, a dialog is displayed, asking for replacement
These settings define a character sequence that identifies a variable
and another sequence that delimits different parts of a variable.
Example: ${variable}$.
Description
Variable Identifier Prefix
The start identifier for a variable. Default is ${.
Variable Identifier Suffix
The end identifier for a variable. Default is }$.
Variable Delimiter
The delimiter used to identify the parts of a variable.
Default is ||.
Table Data
Description
Show Table Row Count
if the number of rows in a table will be displayed in the header of the
table in the Database Objects-&Data tab. Enabling this
property will cause an extra round trip to the database (i.e., a minor
performance
Highlight Primary Key Columns
if Primary Key columns will be indicated in the Database
Objects-&Data tab, Variable Substitution window, SQL
result grids and in the References graph.
Include Variables in SQL
right-click
operations
Data tab will create SQL
statements that include DbVisualizer variables or if
the generated statements are plain SQL. Letting DbVisualizer generate
statements with variables results in the Variable Substitution
being displayed when these statements are executed in the SQL
Commander.
Max Rows at First Display
Set the number of rows that will be fetched for a table in
the Data tab
when a table is first displayed.
Transaction
Description
Pending Transactions at Disconnect
Specifies what DbVisualizer does on exit from the
application, when the auto commit setting is disabled.
Description
Editor when Double-click
Define what target editor should load the file when
double-click Bookmark, Monitor or History script files.
Alt+Double-click
Define what target editor
should load the file when Alt+double-click Bookmark, Monitor or History
script files.
Description
Window at Startup
Enable to open the Monitor
window automatically when starting DbVisualizer.
Start Monitors Automatically
Check to enable start of monitors automatically when
database connections are established.
Form Viewer
Description
Right Aligned Numbers
If enabled, numbers are displayed as right-aligned in the
Form Editor/Viewer.
Image Thumbnail Size
The number of pixels for the widest side of an image
(represented by binary data) when shown in the Data Form Viewer. The
value is used to scale the image proportionally. The default is 150.
Description
Auto Resize Column Widths
If Auto Resize is enabled, DbVisualizer automatically sizes
based on the widest cell value. If Consider Column Header is
also enabled, the header widths are also considered when calculating
the column widths.
Show Grid Row Header
If enabled, a row header is shown also for read-only result
set grids, such as monitoring result set grids.
Max Column Separator Width
This setting is used only when Auto Resize Column Widths
is enabled and specifies a maximum visual column width for grids.
Meaning of setting Max Chars
The Max Chars property in the Database Objects Data
tab and in the SQL Commander is used to control the max
number of characters for text values. If the number of characters for a
text column is more than this setting, the column is colored in a light
red color and the value is truncated as specified by this property:
Truncate Values
Truncate the original value to be less then the setting of Max Chars.
Note: This affects any subsequent edits and SQL
operations that use the value since it's truncated. This setting is
only useful to save memory when viewing very large text columns.
Truncate Values Visually
Truncate the visible value only and leave the original value intact.
This is the preferred setting since it will not harm the original
value. The disadvantage is that more memory is needed when dealing with
large text columns.
Automatically
When enabled the warning popup
in the Grid component is automatically displayed when the Max Rows
setting is exceeded, if columns are truncated or if the loading was
interrupted.
The Copy category groups properties that control the result
of using Copy Selection
and Copy Selection (With Column Header) via the
grid right-click menu, the corresponding key bindings, and drag and
Description
Column Delimiter
Specifies the delimiter between columns in a multi column
Row Delimiter
Specifies the new line control characters for multi row copy
The Colors category is used to define alternative background,
foreground and grid colors for grid components.
Binary/BLOB
and CLOB Data
Description
Presentation of Binary/BLOB and CLOB Data
Specifies how binary/BLOB and CLOB data values are
represented in
grids. Setting this property to By Value results in performance
penalties and the memory consumption increases dramatically.
Copy/Paste
Binary/Blob
Specifies what data is
transferred for binary/BLOB and CLOB data when copy and drag.
The editor category controls various settings specific for the SQL
Commander editor.
Description
Open SQL File in New DbVisualizer instance
Microsoft Windows only:
when enabled and opening a .sql file in Windows it will load into a new
SQL Editor in the running DbVisualizer instance. If disabled and
opening a .sql file then it will open in a new DbVisualizer instance.
Recent Files Limit
Specifies the max number of files listed in the File-&Open
Recent sub menu.
Confirm Close of Unsaved Editors
If enabled, DbVisualizer asks you whether to save the text
in an SQL editor with modified content ( not only editors
loaded from file) when you close the editor.
into Unsaved Editors
If enabled, DbVisualizer ask you
whether to save the text
in an SQL editor with modified content ( not only editors
loaded from file) when you load a new file into the editor.
Set "Sticky" for SQL Editor(s)
If enabled, the Sticky flag is automatically set for all new
SQL Editors, which means that the database connection details only can
be changed manually.
Specifies settings for the tab keyboard key: Tab
number of characters a tab character corresponds to)& and
Expand Tab to Whitespace (if enabled, always insert space characters
when the tab key is pressed).&
Delimiters
Statement delimiters define how a script should be divided into
specific SQL statements in the pre-processing phase.
Description
SQL Statement Delimiter 1
Defines the character(s) used to delimit one SQL statement
from another in a SQL script
SQL Statement Delimiter 2
Defines the additional character(s) used to delimit one SQL
statement from another in a SQL script. If there is no need for more
then one SQL statement delimiter, set this one to the same as delimiter
Allow "go" as Delimiter
Specifies whether go as the first word on a single
line should be interpreted as a statement delimiter.
Begin Identifier
Defines the character(s) that identifies the start of an
SQL block.
End Identifier
Defines the character(s) that identifies the end of an
SQL Formatting
The SQL formatting category groups properties to control the SQL
formatting feature in the SQL Commander. To see the effect of each
property, modify it, press Apply and format the SQL
in the SQL Commander.
Auto Completion
This category is used to define the visual appearance of the auto
completion popup in SQL Editors.
Description
Sort Tables List
Enable this to always present tables sorted in the auto
completion popup
Sort Columns List
Enable this to always present column names sorted in the
auto completion popup
Display Automatically
Enable this and the auto completion popup is automatically
displayed whenever possible
Instant Substitution
Enable this and the auto completion feature substitutes
directly if there is only one matching entry
Case for Auto
Completed Names
Specifies whether auto completed
names should be inserted in uppercase, lowercase or database default
Description
Single Line Identifier 1
Specifies the character(s) that identifies the beginning of
a one line comment
Single Line Identifier 2
Specifies the additional character(s) that identifies the
beginning of a one line comment
Block Comment Begin Identifier
Specifies the character(s) that identifies the start of a
multi line comment block
Block Comment End Identifier
Specifies the character(s) that identifies the end of a
multi line comment block
SQL History
Settings used to control the SQL history feature.
Description
Collect Duplicates in a Single
History Entry
When enabled and executing the same SQL in sequence in the
SQL Commander then only one history entry is created. The Count field is increased for each
execution.
Ignore Error Entries
Enable to skip creating history entries when execution
results in error(s)
Ignore SQL (regex)
Don't create history entry if the SQL match this regular
expression
Proxy Settings
The Check for Updates feature
requires HTTP access to the internet. If you access the internet
through a proxy, you must specify the proxy settings in order to use
this feature.
Description
One of No proxy, Use system proxy settings or Use manual proxy settings. Default
is No Proxy. Use system proxy settings use the
configuration created using a platform tool, such as the Control Panel
in Windows or System Properties in Mac OS X. The following settings
only apply when choosing Use manual
proxy settings.
Proxy Type
Specifies the type of proxy you use: HTTP or SOCKS
Proxy Host
Specifies the name or the IP address for the proxy host
Proxy Port
Specifies the proxy port number
Proxy User
If the proxy requires authentication, specifies the proxy
user account name. Leave blank for a non-authenticating proxy
Proxy Password
If the proxy requires authentication, specifies the password
for the proxy user account name. Leave blank for a non-authenticating
Database settings extends the General settings with properties that may
have different values per supported database type. You specify the
database type for a connection by choosing the appropriate type
from the Database Type
list in the Connection tab. If there is no matching entry, use the Generic database
The database type specific properties in the Tool Properties apply to
all connections of the specific database type. You can also override
these properties in the
Connection Properties tab for a specific connection, in case you need
to use different values for connections of the same database type.
Properties window showing the tree with Database categories
The following properties are displayed when selecting a database type
in the tree.
Description
Connection Mode
Specifies the connection mode for the database connection:
Development, Test or Production.
are based on connection mode. For the Test and Production modes,
DbVisualizer displays a border around areas where database content can
be edited, to bring your attention to the fact that you are connected
to a database where others may be affected by your changes.
Show only default Database or Schema
Enable this if you only want the default database or schema
listed in the database objects tree.
Connect when "Connect All"
The Connect All feature allows you to connect to
multiple database connections with a single click. Enable this property
to include database connections of this type when using the Connect All
Authentication
Description
Require Userid
If enabled, you are asked to enter a userid whenever the
database connection is established
Require Password
If enabled, you are asked to enter a password whenever the
database connection is established
How to handle the password, one
of Save Between Sessions, Save During Session or Clear at Disconnect
Identifiers
Delimited identifiers are identifiers which do not need to follow the
rules&of regular database object identifiers. Usually,
delimited identifiers&are used when you need to use
reserved words, spaces and mixed case sequences in an
identifier.
Description
Begin Identifier
Defines the start character for a delimited identifier.
Normally, this is a double quote as in "...".
End Identifier
Defines the end character for a delimited identifier.
Normally, this is a double quote as in "...".
Enable this to use delimited identifiers in the Scripting
Auto Completion/Query Builder
Enable this to use delimited identifiers in the auto
completion and query builder features
Enable this to use delimited
identifiers in the Export features
Qualifiers
These properties control whether table and column names should
be qualified when DbVisualizer generates SQL statement.
Description
Qualify with Schema/Database: Scripting
Enable this to qualify object names with the schema/database
in the Scripting features
Qualify with Schema/Database:
References/Navigator Graphs
Enable this to qualify object
names with the schema/database
in the graphs shown in the References and Navigator tabs.
Qualify with Schema/Database: Auto
Completion/Query Builder
Enable this to qualify object names with the schema/database
in the auto completion and query builder features.
Qualify with
Schema/Database: Export
Enable this to qualify object names with schema/database in
the Export Schema and Export Table features
Qualify Columns: Auto Completion/Query
Enable this to qualify column names with the table name in
the auto completion and query builder features.
Note: When you specify a table name alias, it is always
used as a column name qualifier, regardless of this property setting.
Physical Connection
The Physical Connection category controls whether DbVisualizer should
use only one physical connection with the database server or if
physical connections will be acquired when needed. The Use Single Shared Physical Database
Connection
is disabled by default. When disabled, it means that
whenever establishing a connection DbVisualizer will assign one
physical database connection for the objects tree and one per every SQL
Editor in the SQL Commander. The physical connection for an SQL Editor
is not acquired directly when the editor is created but rather the
first time it is used to execute a script.
If enabling Use Single Shared
Physical Database Connection,
only one physical connection will be used for that database.
DbVisualizer will then share the physical connection among all features
communicating with the database. If using a single physical connection
and auto commit is off then a confirmation dialog may appear when
launching features that require transaction control and if there are
uncommitted changes in the database.
Transaction
Description
Auto Commit
Defines if each executed SQL statement will be auto
committed or not. This setting applies for all SQL statements that are
executed in the SQL Commander.
Ask when Auto Commit is Off: When
Uncommitted Updates
If auto commit is off then this setting when enabled will
show a confirmation dialog if there are uncommitted changes (updates,
inserts, deletes, etc) in the SQL Commander.
Ask when Auto Commit is Off:
If auto commit is off then this
setting when enabled will
show a confirmation dialog if statements (not select) has been executed
in the SQL Commander without commit/rollback being invoked.
Transaction Isolation
Attempts to change the transaction isolation level for all
database connections.
Note: If this property is changed during a transaction,
the result is JDBC driver specific.
Commit Batch Size
Specifies after how many rows DbVisualizer commits the
transaction when saving a batch of changes in the table data editor and when inserting
rows in table data import.
Statements
This category controls the SQL templates that DbVisualizer uses
internally throughout the application. Each SQL template is composed of
the standard SQL and variables.
Variables are identified with $$...$$.
DbVisualizer relies on a number of predefined variables, listed in the
SQL Templates
area right-click menu:
All predefined variables
A specific predefined variable can be used in
one or more of the SQL templates. Using a variable that is not valid
for a specific SQL statement will result in the variable appearing
as-is when the
statement is executed.
There is normally no reason to modify the SQL templates. There might
however be
circumstances when edits are needed, for instance to modify the
appearance of
the where clause or the list of
Description
SELECT ALL
Command used when selecting all rows for a table
SELECT ALL
Command used when selecting all
columns, explicitly, and rows for a table
SELECT ALL WHERE
Command used when selecting some rows for a table
SELECT COUNT
Command used to get the number of rows in a table
INSERT INTO
Command used to insert a new row into a table
UPDATE WHERE
Command used to update an existing row in a table
DELETE WHERE
Command used to delete a specific row in a table
DROP TABLE
Command used to drop a specific table
Monitor Row Count
Command used to get the number of rows in a table and the
current time stamp
Monitor Row Count Change
Command used to get the row count difference in a table
compared to the previous execution. The calculated row count and the
current time stamp is returned
Connection
Connection hooks defines optional SQL commands that are sent to the
database at connect and just before disconnect. They are typically used
to initialize the database session with custom settings and to clean up
various resources at
disconnect.
Description
Run SQL at Connect
Defines the SQL to be executed just after the connection has
been established
Run SQL at Disconnect
Defines the SQL to be executed just before the connection
will be disconnected
Tree Labels
Description
Custom Object Tree Labels
Here you can define custom tree labels for the data nodes in
the database objects tree. The Object Type must match the corresponding
type in the actual database profile, see more below.
The label for a data
node (e.g., a table or view node, as opposed to a node
that just groups nodes, such as the Tables node) is typically the name
of the database object the node represents, e.g., the table
or view name. In some cases, you may want to extend the label to
include other information, such as the name of the schema that the
object belongs to. To do this, you can use a custom tree label, defined
in the Objects Tree properties category.
You need two pieces of information to define a custom label: the Object
Type name for the data node, and the names of the variables that hold
the information you want to use in the label. You find this information
in the &ObjectsTreeDef&
element in the database profile
XML file (described in detail in the Database Profile
Framework section) for the database type you want to modify.
Using the database profile for the JavaDB/Derby database type as an
a stripped down version of the &ObjectsTreeDef&
element looks like this:
&ObjectsTreeDef id="derby"&
&GroupNode type="Schemas" label="Schemas"&
&DataNode type="Schema" label="${derby.getSchemas.Schema}"&
&SetVar name="schema" value="${derby.getSchemas.Schema}"/&
&SetVar name="schemaId" value="${derby.getSchemas.Schema Id}"/&
&GroupNode type="Tables" label="Tables"&
&DataNode type="Table" label="${derby.getTables.Table Name}" isLeaf="true"&
&SetVar name="objectname" value="${derby.getTables.Table Name}"/&
&SetVar name="rowcount" value="true"/&
&SetVar name="acceptInQB" value="true"/&
&/DataNode&
&/GroupNode&
&/DataNode&
&/GroupNode&
&/ObjectsTreeDef&
In this example, there is one &DataNode&
element with a type
attribute set to Schema,
with a nested &DataNode&
element with a type
attribute set to Table.
These two elements represent data nodes, for the schema and table
node, respectively, and the type
attribute value is the Object Type name you need to bind the custom
label to an object type.
Each &DataNode&
element also has a number of nested &SetVar&
elements, declaring the variables you can use in the custom label
value. All variables declared for the object type node and those
declared for a parent &DataNode&
element can be used in the label. So, if you want the label for table
nodes in the tree to show both the schema name and the table name, you
add a custom label declaration like this:
Figure: Custom label declaration
SQL Editor
Description
Set Current Schema
If enabled, changing the schema in the SQL Commander also
changes the default schema for the database connection, so that
unqualified table names in any SQL statement are associated with the
selected schema. If this property is not enabled, changing the schema
only affects the schemas used for auto-completion.
Note: Only a few databases supports setting the default
schema for an opened connection. This property is only shown for
database types that support it.
Query Builder
Description
Query Builder Auto-Join Properties
With auto-join enabled, the Query Builder automatically
joins tables as they are included in the query, based on the specified
column matching rule: FK/PK declarations or columns with matching names
in different tables.
Generate JOIN clauses in Query Builder
Specifies whether the Query Builder generates joins as JOIN
clauses or WHERE conditions.
JOIN clause:
HR.EMPLOYEES emp INNER JOIN HR.DEPARTMENTS dept ON
(emp.DEPARTMENT_ID = dept.DEPARTMENT_ID)
WHERE condition:
SELECT * FROM
HR.EMPLOYEES emp,
HR.DEPARTMENTS dept WHERE
(emp.DEPARTMENT_ID = dept.DEPARTMENT_ID)
DbVisualizer provides more support for some databases than for others,
requires extended configuration capabilities for these databases.
Types (Oracle)
With Oracle, the DATE data type should sometimes be handled as
TIMESTAMP. Enable Handle
DATE as TIMESTAMP and DbVisualizer will convert DATE
into TIMESTAMP objects.
Data Types (DB2 and
JavaDB/Derby)
DB2 and JavaDB/Derby supports a data type named CHAR FOR BIT DATA.
Plan (Oracle, SQL Server and DB2)
The explain plan feature supported for Oracle, SQL Server and DB2 can
be configured to highlight certain threshold levels.
Description
Color Critical Nodes
If enabled, critical nodes in the explain plan are
highlighted.
Critical Threshold
Specifies the threshold for when a node should be handled as
Warning Threshold
Specifies the threshold for when a node should be handled as
Explain Plan (Oracle)
The explain plan feature for Oracle can be configured to define the
management of the underlying plan table in which the explain plan
result is stored.
Plan (DB2)
The explain plan feature for DB2 can be configured to define the
management of the underlying plan tables in which the explain plan
result is stored.
Objects Tree (Oracle)
Description
Show Empty Schemas
If disabled, only schemas that contain database objects are
shown in the tree.
Note: Only disable this if you have DBA permissions,
otherwise no schemas as listed,
System View Prefix
Select here whether the database profile for Oracle should
retrieve database information from the DBA or ALL system tables.
Note: If choosing DBA, make sure the appropriate
privileges are granted for the user you are connecting as.
Copyright & 2011 DbVis Software AB. All rights reserved.

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