This section summarizes new features and functionality of TimesTen Release 18.1 that are documented in this guide, providing links into the guide for more information.
This release of TimesTen Scaleout adds a new type of backup: staged backups. This type of backup eliminates the overhead of creating local copies of the checkpoint and log files and reduces the network traffic of creating a remote copy in the repository. Staged backups are ideal for when you want to make regular backups on a second site that is independent to your main site. See "Back up a database into a remote repository (WAN-friendly)" for more information.
To increase the performance of database import operations, the ttGridAdmin dbImport command now enables you to use multiple threads to import database objects with the use of the -numThreads option. See "Import a database export" for more information.
If any request to create a channel between elements hangs due to software issues or network failures, then all channel create requests could be blocked. You can set a timeout for how long to wait for a channel create request to a remote element. See "Set a timeout for create channel requests" for more information.
As always, you can evict a replica set from the distribution map for your grid with the ttGridAdmin dbDistribute -evict command. However, now you must make sure that all pending requests for adding or removing elements are applied before requesting the eviction of a replica set. That is, you can no longer combine ttGridAdmin -add or -remove operations with a request to evict. See "Remove and replace a failed element in a replica set" for details.
This release of TimesTen Scaleout adds support to importing a client DSN into a TimesTen Client system on Windows. See "Establishing client connections from a TimesTen Client" for further details.
You can attempt to terminate all user connections to a database with ttGridAdmin dbDisconnect command. See "Unloading a database from memory" for more information.
You can attempt a re-synchronization of your data if the data distribution process is interrupted or fails to complete. Re-synchronization involves executing the ttGridAdmin dbDistribute -resync operation. See "Recovering from a data distribution error" for full details.
You can specify the TT_DMLCommitOnSuccess hint to enable or disable a commit operation as part of DML execution. See "Using the TT_CommitDMLOnSuccess hint" for more information.