TIMESTEN ODBC DRIVER

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You can use environment variables in the specification of the data store path name and log file path name. In TimesTen, any operation that ends your transaction, such as a commit or rollback, closes all cursors associated with the connection. The duplicate operation is not a database creation operation, so the preallocate attribute is not honored. Because the ttBulkCp utility works on data stored in ASCII files, you can also use this utility to import data from other applications, provided the number of columns and data types are compatible with those in the table in the TimesTen data store and that the file found is compatible with ttBulkCp. Perm WarnThreshold Indicates the threshold percentage at which TimesTen issues out-of-memory warnings for the permanent partition of the database’s memory. Con necting to and disconnecting from a database This section provides examples of connecting to and disconnecting from the database. TimesTen uses this attribute to specify the port number to use if an automatic failover occurs.

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The description field is optional. All restrictions for the UidPwdSet built-in procedure apply.

See Figure and Odnc In general, the minimum size of this shared memory segment should be:. This is the implicit TimesTen national character set. On bit systems, the maximum value is 65, MB 64 GB.

Restrictions Certain restrictions must be considered when using the passthrough feature. Database Character Set list. Access control privileges are checked both when SQL is prepared and when it is executed in the database, with most of the performance cost coming at prepare time. If you cannot establish a connection to the database, check that the ttconnect. When used as a core database for data intensive workloads, we’re seeing significant demand to setup an Oracle Database Gateway to federate TimesTen data for downstream applications, including those built on Oracle.

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Connection Attributes

To use a different value for the second occurrence of a in the SQL statement above:. When you call the built-in procedure ttCommitBufferStatsthe commit buffer statistics are expressed in bytes.

You are required to specify the database character set at database creation timesgen only. By setting the -serverPool option in the ttendaemon.

The user name and password are used as is. You can create two or more DSNs that refer to the same data store but have different connection attributes. For any subsequent occurrence of a odhc parameter name, the application has the following choices. Only the instance administrator can load a database with changes to first connection attribute settings. For the SQL statement above, the two occurrences of a are considered to be a single parameter, so cannot be bound separately:.

The default is 4.

On Solaris, Linux and Windows bit systems, TimesTen enables applications that connect to a shared database to specify whether the real memory should be locked while the database is being loaded into memory or while the store is in memory. Information about incremental backups is tlmesten retained across data store recovery or restoration.

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Creating an ODBC Client DSN for an Oracle TimesTen Database in Windows

Tkmesten rest of this section provides details for each mode, considering the following query: If the TimesTen database will be used to cache data from an Oracle database, specify the password of the Oracle user in the Oracle Password for Cache field.

The tables and indexes can then be restored into another TimesTen data store.

None LogDir The directory where transaction log files are stored. TimesTen reserves 47 connections for internal use, leaving a maximum of connections available to applications.

Ofbc name is not a file name. The connection attributes that control the size of the data store when it is in timfsten are PermSize and TempSize.

For reference, here is the SQLConnect calling sequence: Copying, migrating, backing up and restoring a data store The TimesTen utilities for copying, backing up, restoring and migrating a data store allow you to: Enables automatic or user-defined track-based parallel replication. At all passthrough levels, passthrough execution of DDL statements does not result in commits on the TimesTen side.

The parentheses are optional.