What's New in InterBase 2017
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InterBase 2017 includes new features and bug fixes.
See the following sections for more information:
New ODS version
Databases created with InterBase 2017 use ODS 17.
isqlsupports a new command,
RECONNECT. You can use
isqland SQL scripts, to reconnect to the latest successfully connected database. See RECONNECT for more information.
isqlsupports a new command line option,
-names <character set name>. You can use this option to specify the character set to use for current database connection. See Command-line Options for more information.
Monitor all online databases
InterBase 2017 provides monitoring of all the online databases in a server with a single connection. Administrators can use the server level statistics to better monitor an instance usage.
Note:This feature is only available with ODS 17 and above.
To use this feature:
- Connect to the admin database on the system
- Run performance monitoring queries on any TMP$ tables as you would in a single database. You will see cumulative data for all databases that are currently online.
- Run UPDATE operations on TMP$DATABASE for SWEEP, FLUSH and RECLAIM for database other than admin
- Run UPDATE operations on TMP$TRANSACTIONS for COMMIT and ROLLBACK for database other than admin
Subscriptions reflect ALTER TABLE changes
Subscriptions now reflect changes when a column is added with ALTER TABLE. For example, using the following code FOO_SUBS shows the newly added column BID.
CREATE TABLE FOO (AID INT); CREATE SUBSCRIPTION FOO_SUBS ON FOO; INSERT INTO FOO VALUES (1); ALTER TABLE FOO ADD BID INT; UPDATE FOO SET BID=2; COMMIT;
Note: Databases must be ODS 17.
Exclusive Isolation Level
Exclusive Isolation allows transactions to acquire exclusive lock on a target table, and be the only ones able to execute
DELETE on a table. Refer to Exclusive Isolation Level for more information.
SQL Derived Table Support
InterBase now supports derived tables, a highly used SQL development feature. The derived table syntax enhances the abilities of existing applications to use InterBase as a back end RDMBS. For more information refer to derived tables documentation.
The Truncate Table command allows users and applications to empty the contents of a database table. This feature is useful for tables where rows require frequent deletion. The Truncate Table command performs faster, requires less I/O, and journals and archives much less information than an equivalent
DELETE FROM table command. For more information refer to Truncate Table.
Transaction Wait Time
Specify a period of time transactions wait for acquiring lockable resources. Now is possible to specify a time period that transactions wait for a lockable resource to be acquired. For more information refer to Wait time.
Single Line Comment
You can add a single line comment to a SQL statement using two dashes, for more information and examples refer to Comment for more information.
--This is a comment line.
Change View Performance
In InterBase 2017 Change View retrieval performance has been enhanced.
Note: This performance enhancement only works on ODS 17 databases.
First Sweep of a Restored Database is now a Fast Sweep
With InterBase 2017, any database that you restore is immediately marked as swept, therefore the first sweep of that database is a fast sweep. In order to take advantage of this feature, you need to perform a database restore with InterBase 2017 and use either ODS 15 or ODS 16. See Sweep Interval and Automated Housekeeping for more information about sweeping.
See Resolved Defects for a list of bug fixes in InterBase 2017.
For system requirements to install and run InterBase, see System Requirements/Prerequisites.