Informatica® Cloud (Version Spring 2017)

Oracle Connector Guide

Informatica Cloud Oracle Connector Guide

Version Spring 2017April 2017

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Publication Date: 2017-03-31

Table of Contents

Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Informatica Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Informatica Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Informatica Cloud Web Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Informatica Cloud Communities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Informatica Cloud Marketplace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Informatica Cloud Connector Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Informatica Knowledge Base. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Informatica Cloud Trust Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Informatica Global Customer Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 1: Introduction to Oracle Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Oracle Connector Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Oracle Supported Objects and Task Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Oracle Connector Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Chapter 2: Oracle Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Oracle Connections Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Oracle Connection Properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Oracle Connection Rules and Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Chapter 3: Data Synchronization Tasks with Oracle Connector. . . . . . . . . . . . . . . . . 13Oracle Sources in Data Synchronization Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Oracle Targets in Data Synchronization Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Oracle Lookups in Data Synchronization Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Rules and Guidelines for Oracle Sources and Targets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Data Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Simple Data Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Advanced Data Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Rules and Guidelines for Data Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Chapter 4: Mappings and Mapping Configuration Tasks with Oracle Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Oracle Sources in Mappings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Key Range Partitioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Configuring Key Range Partitioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Oracle Targets in Mappings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Pushdown Optimization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Full pushdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Source Pushdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4 Table of Contents

Pushdown Optimization Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Configuring Pushdown Optimization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Chapter 5: Data Replication Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Data Replication Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Data Replication Source Properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Data Replication Target Properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Full Load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Rules and Guidelines for Oracle Sources and Targets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Chapter 6: Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Troubleshooting Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Troubleshooting an Oracle Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Troubleshooting a Data Synchronization Task. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Troubleshooting a Data Replication Task. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table of Contents 5

PrefaceThe Informatica Cloud Oracle Connector Guide contains information about how to set up and use Oracle Connector. The guide explains how you can use Oracle Connector to read data from and write data to Oracle databases.

Informatica Resources

Informatica DocumentationTo get the latest documentation for your product, browse the Informatica Knowledge Base at https://kb.informatica.com/_layouts/ProductDocumentation/Page/ProductDocumentSearch.aspx.

If you have questions, comments, or ideas about this documentation, contact the Informatica Documentation team through email at infa_documentation@informatica.com.

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Access the Informatica Cloud Community at:

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https://marketplace.informatica.com/community/collections/cloud_integration

6

Informatica Cloud Connector DocumentationYou can access documentation for Informatica Cloud Connectors at the Informatica Cloud Community: https://network.informatica.com/cloud/index.htm

You can also download individual connector guides: https://network.informatica.com/docs/DOC-15333.

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The telephone numbers for Informatica Global Customer Support are available from the Informatica web site at https://www.informatica.com/services-and-training/support-services/contact-us.html.

Informatica Resources 7

C H A P T E R 1

Introduction to Oracle ConnectorThis chapter includes the following topics:

• Oracle Connector Overview, 8

• Oracle Supported Objects and Task Operations, 8

• Oracle Connector Example, 9

Oracle Connector OverviewYou can use Oracle Connector to connect to Oracle databases from Informatica Cloud. Use Oracle Connector to read data from or write data to Oracle databases.

You can use Oracle objects as sources and targets in Contact Validation tasks, Data Synchronization tasks, Data Masking tasks, Data Replication tasks, PowerCenter tasks, Mapping Configuration tasks, and mappings.

You can create, update, or delete records when you use Oracle Connector to write to Oracle databases. When you create a Mapping Configuration task, you can use the Oracle bulk API to perform insert operations.

Note: Oracle Connector does not support BLOB data type.

Oracle Supported Objects and Task OperationsThe following table lists the tasks and object types that Oracle Connector supports:

Task Type Source Target Lookup

Contact Validation Yes Yes Yes

Data Masking Yes Yes Yes

Data Replication Yes Yes Yes

Data Synchronization Yes Yes Yes

8

Task Type Source Target Lookup

Mapping Configuration Yes Yes Yes

PowerCenter Yes Yes Yes

For information about Contact Validation tasks, Data Masking tasks, and PowerCenter tasks, see Deploy.

Note: Do not include NChar and Nvarchar2 columns in Oracle targets. Due to an ODBC driver limitation, the PowerCenter task truncates the last half of NChar and Nvarchar2 data before writing it to Oracle targets.

Oracle Connector ExampleYou are an operations analyst who manages the customer support website of your organization. You want to get the complete statistics and elaborate reports about the support your organization gives to the customers.

You can use Oracle Connector to read data and maintain a database. You can configure a Data Synchronization task or Mapping Configuration task to read data from Oracle. You can then write the data to data visualization tools such as Tableau to visually analyze the data.

Oracle Connector Example 9

C H A P T E R 2

Oracle ConnectionsThis chapter includes the following topics:

• Oracle Connections Overview, 10

• Oracle Connection Properties, 10

• Oracle Connection Rules and Guidelines, 11

Oracle Connections OverviewCreate an Oracle connection to connect to Oracle databases to read and write data. You can use Oracle connections in Data Synchronization tasks, Contact Validation tasks, Data Replication tasks, Data Masking tasks, PowerCenter tasks, Mapping Configuration tasks, and mappings.

Oracle Connector supports Oracle 10g, 11g, and 12c versions. You can connect to Oracle 12c databases that provide Multitenancy and In-Memory features.Note: You cannot connect to an Oracle 12c database instance if the Secure Agent runs on Windows 32-bit or Linux 32-bit operating systems.

Oracle Connection PropertiesWhen you create an Oracle connection, you must configure the connection properties.

The following table describes the connection properties:

Connection Property Description

Runtime Environment Runtime environment that contains the Secure Agent used to access Oracle.

User Name User name for the database login. The user name cannot contain a semicolon.

Password Password for the database login. The password cannot contain a semicolon.

Host Name of the machine that hosts the database server.

Port Network port number used to connect to the database server. Default is 1521.

10

Connection Property Description

Service Name Service name or System ID (SID) that uniquely identifies the Oracle database.Specify the SID in the following format to connect to Oracle databases: SID:<ORACLE_SID>

Schema Schema used for the Oracle connection.

Code Page The code page of the database server. Select one of the following code pages:- MS Windows Latin 1. Select for ISO 8859-1 Western European data.- UTF-8. Select for Unicode data.- Shift-JIS. Select for double-byte character data.- ISO 8859-15 Latin 9 (Western European).- ISO 8859-2 Eastern European.- ISO 8859-3 Southeast European.- ISO 8859-5 Cyrillic.- ISO 8859-9 Latin 5 (Turkish).- IBM EBCDIC International Latin-1.

You can configure the following Oracle-specific custom properties under the Secure Agent configuration properties:

Custom Property Description

OdbcDataDirectNonWapi For Data Synchronization tasks, Mapping Configuration tasks, Data Replication tasks, and mappings that use relational multibyte data, add the OdbcDataDirectNonWapi property and set the property to 0 to process Unicode data.Note: When you set this property to 0, the processing time of single-byte data might increase.Enter the following values:For Type, select DTM.For Sub-type, select INFO.For Name, enter OdbcDataDirectNonWapi.For Value, enter 0.

oracle.use.varchar.for.number For Data Synchronization tasks, Mapping Configuration tasks, Data Replication tasks, and mappings that have an Oracle source and a Salesforce target, set the oracle.use.varchar.for.number custom property if the Oracle source contains many fields with the Number data type. Values for fields with the Number data type do not load correctly in Salesforce. Enter the following values:For Type, select Tomcat.For Name, enter oracle.use.varchar.for.number.For Value, enter true.

Oracle Connection Rules and GuidelinesConsider the following rules and guidelines when you create an Oracle connection:

• An Oracle table name can have a maximum of 30 characters.

Oracle Connection Rules and Guidelines 11

• When you run a task that contains an Oracle database in the Public schema, ensure that the schema does not contain too many objects. If the schema contains too many objects, the task times out. You can remove some objects from the Oracle database or move the objects into another database schema.

• When you run a task for an Oracle database target, ensure that the UTF-8 characters do not exceed the maximum length of the varchar or char fields. Informatica Cloud might truncate UTF-8 characters if they exceed the maximum length of the varchar or char fields.

12 Chapter 2: Oracle Connections

C H A P T E R 3

Data Synchronization Tasks with Oracle Connector

This chapter includes the following topics:

• Oracle Sources in Data Synchronization Tasks, 13

• Oracle Targets in Data Synchronization Tasks, 14

• Oracle Lookups in Data Synchronization Tasks, 14

• Rules and Guidelines for Oracle Sources and Targets, 14

• Data Filters, 15

• Rules and Guidelines for Data Filters, 15

Oracle Sources in Data Synchronization TasksWhen you configure a Data Synchronization task to use an Oracle source, you can read data from a single object, multiple related objects, or a saved query. To read data from multiple sources, you must define relationships based on key columns or create a user-defined join condition. To optimize performance, you can configure a filter in the Data Filters tab. You can add multiple Oracle objects that have an explicit relationship defined in Oracle.

You can also create a data filter, where you can select an object, field, operator, and enter a filter value based on which the Data Synchronization task runs. You can also configure an advanced filter to define a more complex filter condition, which can include multiple conditions using the AND or OR logical operators.

The following table describes the Oracle source properties:

Property Description

Connection Name of the active source connection.

Source Type Type of the source object available. You can choose from the following source types:- Single- Multiple- Saved query

13

Property Description

Source Object Name of the source object.

Display source fields in alphabetical order

Displays source fields in alphabetical order. By default, fields appear in the order returned by the source system.

Oracle Targets in Data Synchronization TasksYou can use a single object as a target in a Data Synchronization task.

The following table describes the Oracle target properties:

Property Description

Connection Name of the active target connection.

Target Object Name of target objects available in the connection.

Truncate Target When you enable the Truncate Target option, the Secure Agent truncates the table. Default is false.

Enable Target Bulk Load Uses Oracle bulk API to write data in bulk mode to Oracle.Default is unselected.

Display target fields in alphabetical order Displays target fields in alphabetical order. By default, fields appear in the order returned by the target system.

Oracle Lookups in Data Synchronization TasksWhen you configure field mappings in a Data Synchronization task, you can create a lookup to an Oracle object. When you use an Oracle object as a lookup, you do not need to configure specific Oracle properties.

Rules and Guidelines for Oracle Sources and Targets

Use the following rules and guidelines for Oracle sources and targets:

• You can use database tables, synonyms, or views as sources and targets.

• When you use an Oracle source with a Salesforce target, if the source contains fields with the Number data type, change the field type to numeric. Values for fields with the Number data type do not load correctly in Salesforce. You can change the type on the Field Mapping page of the Data Synchronization

14 Chapter 3: Data Synchronization Tasks with Oracle Connector

Task wizard. If you have many fields with the Number data type, you can add the oracle.use.varchar.for.number custom property for the Secure Agent.

• When you create a saved query to read data from an Oracle database, you must omit the final semicolon from the SQL statement.

• You cannot use the select * from <TABLE_NAME> SQL command in a saved query. You must provide the explicit column list.

• If there is an error row when you run a task to write files to an Oracle target in bulk mode, the Secure Agent writes the batch that contains the error row in normal mode.

Data FiltersYou can create simple or advanced data filters. You can also create a set of data filters for each object included in a Data Replication or Data Synchronization task. Each set of data filters act independently of the other sets.

Simple Data FiltersYou can create one or more simple data filters. When you create multiple simple data filters, the associated task creates an AND operator between the filters and loads rows that apply to all simple data filters.

Advanced Data FiltersYou can create an advanced data filter to create complex expressions that use AND, OR, or nested conditions. The expression that you enter becomes the WHERE clause in the query used to retrieve records from the source.

Rules and Guidelines for Data FiltersUse the following rules and guidelines when you configure data filters:

• If you include UTF-8 characters in a data filter on an Oracle source, the data filter does not work.

• If you create a simple data filter on a date field in an Oracle source, the date field must use the default Oracle format DD-MON-YY. To create a filter on a date field with a non-default date format, use an advanced data filter.For example, to read an Oracle date field that has the date format 'yyyy/mm/dd:hh:mi:ssam', use the following advanced filter:

“DATE_FIELD” > to_date('1998/05/31:12:00:00AM', 'yyyy/mm/dd:hh:mi:ssam')

Data Filters 15

C H A P T E R 4

Mappings and Mapping Configuration Tasks with Oracle Connector

This chapter includes the following topics:

• Oracle Sources in Mappings, 16

• Key Range Partitioning, 17

• Oracle Targets in Mappings, 19

• Pushdown Optimization, 19

Oracle Sources in MappingsTo read data from an Oracle database, configure an Oracle object as the Source transformation in a mapping.

Enable partitioning when you configure the Source transformation in the Mapping Designer to optimize the performance of the Mapping Configuration task.

Specify the name and description of the Oracle source. Configure the source, query options, and advanced properties for the source object.

The following table describes the properties that you can configure for an Oracle source:

Property Description

Connection Name of the active source connection.

Source Type Type of the Oracle source object available. You can choose from the following source types:- Single- Multiple- Query- Parameter

Object Name of the source object for the mapping.You can specify a custom query for a source object.

16

Property Description

Filter Configure a simple filter or an advanced filter to remove rows at the source. You can improve efficiency by filtering early in the data flow.A simple filter includes a field name, operator, and value. Use an advanced filter to define a more complex filter condition, which can include multiple conditions using the AND or OR logical operators.

Sort Select the fields and type of sorting to use. To sort data for a parameterized source, you must use a parameter for the sort options.

Select distinct rows only

When you read data from multiple sources, select this option to read only distinct rows.

The following table describes the advanced properties that you can configure for an Oracle source:

Advanced Property Description

Tracing Level Amount of detail that appears in the log for this transformation. You can choose terse, normal, verbose initialization, or verbose data. Default is normal.

Pre SQL Pre-SQL command that must be run before reading data from the source.

Post SQL Post-SQL command that must be run after writing data to the target.

Output is deterministic

Relational source or transformation output that does not change between session runs when the input data is consistent between runs.When you configure this property, the Secure Agent does not stage source data for recovery if transformations in the pipeline always produce repeatable data.

Output is repeatable Relational source or transformation output that is in the same order between session runs when the order of the input data is consistent.When output is deterministic and output is repeatable, the Secure Agent does not stage source data for recovery.

Key Range PartitioningYou can configure key range partitioning when you use a Mapping Configuration task to read data from Oracle sources. With key range partitioning, the Secure Agent distributes rows of source data based on the fields that you define as partition keys. The Secure Agent compares the field value to the range values for each partition and sends rows to the appropriate partitions.

Use key range partitioning for columns that have an even distribution of data values. Otherwise, the partitions might have unequal size. For example, a column might have 10 rows between key values 1 and 1000 and the column might have 999 rows between key values 1001 and 2000. If the mapping includes multiple sources, use the same number of key ranges for each source.

When you define key range partitioning for a column, the Secure Agent reads the rows that are within the specified partition range. For example, if you configure two partitions for a column with the ranges as 10 through 20 and 30 through 40, the Secure Agent does not read the rows 20 through 30 because these rows are not within the specified partition range.

Key Range Partitioning 17

You can configure a partition key for fields of the following data types:

• String

• Any type of number data type. However, you cannot use decimals in key range values.

• Date/time type. Use the following format: MM/DD/YYYY HH24:MI:SS

You cannot use key range partitions when a mapping includes any of the following transformations:

• Web Services

• XML to Relational

Configuring Key Range PartitioningPerform the following steps to configure key range partitioning for Oracle sources:

1. In the Source Properties, click the Partitions tab.

2. Select the required partition key from the list.

3. Click Add New Key Range to define the number of partitions and the key ranges based on which the Secure Agent must partition data.

Use a blank value for the start range to indicate the minimum value. Use a blank value for the end range to indicate the maximum value.

The following image displays the Partitions tab:

18 Chapter 4: Mappings and Mapping Configuration Tasks with Oracle Connector

Oracle Targets in MappingsTo write data to an Oracle target, configure an Oracle object as the Target transformation in a mapping. Specify the name and description of the Oracle target. Configure the target and advanced properties for the target object.

The following table describes the properties that you can configure for an Oracle target:

Property Description

Connection Name of the active Oracle target connection.

Target Type Type of the Oracle target object available. You can choose from the following target types:- Single- Parameter

Object You can select an existing object from the list or create a target at run time.

Operation Select the target operation. You can perform the following operations on an Oracle target:- Insert- Update- Upsert- Delete- Data Driven

Truncate target When you enable the Truncate Target option, the Secure Agent truncates the table. Default is false.

Enable Target Bulk Load

Uses Oracle bulk API to insert data in bulk mode.When you create a Mapping Configuration task, you can use the Oracle bulk API to perform insert operations.Default is unselected.

If you select the Forward Rejected Rows option, the Secure Agent flags the rows for reject and writes them to the reject file. If you do not select the Forward Rejected Rows option, the Secure Agent drops rejected rows and writes them to the session log file. The Secure Agent does not write the rejected rows to the reject file.

Note: If there is an error row when you run a task to write files to an Oracle target in bulk mode, the Secure Agent writes the batch that contains the error row in normal mode.

Pushdown OptimizationWhen you read data from an Oracle source, transform the data, and write the data to a target, you can configure pushdown optimization to push the transformation logic to the source or target database system. If the source and target databases are the same, you can configure full pushdown optimization for improved performance.

When the Secure Agent applies pushdown optimization, it pushes transformation logic to a database. The Secure Agent translates the transformation logic into SQL queries and sends the SQL queries to the database. The database runs the SQL queries to process the transformations.

Pushdown optimization improves mapping performance when the database can process the transformation logic faster than the Secure Agent. The Secure Agent also reads less data from the database.

Oracle Targets in Mappings 19

The amount of transformation logic that the Secure Agent pushes to the database depends on the database, the transformation logic, and the mapping configuration. The Secure Agent processes all transformation logic that it cannot push to a database.

When you configure pushdown optimization for the mapping, the Secure Agent analyzes the optimized mapping from the source to the target or until it reaches a downstream transformation that it cannot push to the source database. The Secure Agent generates and executes a SELECT statement for each source that has transformation logic pushed down. Then, it reads the results of this SQL query and processes the remaining transformations in the mapping.

Note: When you push down transformation logic to the database, ensure that the database has enough resources to process the queries faster. Otherwise, there could be a performance degradation.

The Secure Agent can push the following transformation logic to an Oracle source or target:

Transformations Supported Pushdown Type

Aggregator Source, Full

Expression Source, Full

Filter Source, Full

Joiner Source, Full

Sorter Source, Full

Union Source, Full

Router Full

Full pushdownWhen the Secure Agent applies full pushdown optimization, it pushes all the transformation logic in the mapping to the target database. You can configure full pushdown in the Advanced Session Properties section.

Full pushdown optimization is ideal when the source and target are in the same connections. For example, if a mapping contains an Oracle source and an Oracle target, configure full pushdown optimization to push all the transformation logic for processing from an Oracle source database to an Oracle target database.

Source PushdownWhen the Secure Agent applies source pushdown, it analyzes the mapping from source to target or until it reaches a downstream transformation it cannot push to the source database.

The Secure Agent generates and executes a SELECT statement based on the transformation logic for each transformation it can push to the database. Then, it reads the results of this SQL query and processes the remaining transformations.

You can configure a mapping to use source pushdown if the source and target reside in different databases. For example, if a mapping contains an Oarcle source and an Oracle target, you can configure source pushdown to push some transformation logic for processing to the Oracle source.

20 Chapter 4: Mappings and Mapping Configuration Tasks with Oracle Connector

Pushdown Optimization Functions

The following table summarizes the availability of pushdown functions in an Oracle source or target:

Functions Pushdown Type

ABS() Source, Full

AVG() Source, Full

COS() Source, Full

COUNT() Source, Full

DATE_COMPARE() Source, Full

DECODE() Source, Full

EXP() Source, Full

IIF() Source, Full

IN() Source, Full

ISNULL() Source, Full

LOWER() Source, Full

MAX() Source, Full

MIN() Source, Full

POWER() Source, Full

SIN() Source, Full

SQRT() Source, Full

SUM() Source, Full

TAN() Source, Full

UPPER() Source, Full

Configuring Pushdown OptimizationPerform the following steps to configure pushdown optimization for Oracle sources or targets:

1. In the Schedule tab of the Mapping Configuration task, navigate to the Advanced Session Properties section.

2. Click Add to add a new session property.

3. From the Session Property Name list, select Pushdown Optimization.

Pushdown Optimization 21

4. From the Session Property Value list, select the required type of pushdown optimization. The following image shows the types of pushdown optimization that you can configure:

22 Chapter 4: Mappings and Mapping Configuration Tasks with Oracle Connector

C H A P T E R 5

Data Replication TasksThis chapter includes the following topics:

• Data Replication Overview, 23

• Data Replication Source Properties, 24

• Data Replication Target Properties, 24

• Full Load, 24

• Rules and Guidelines for Oracle Sources and Targets, 25

Data Replication OverviewYou can replicate Oracle data to a target by using the Data Replication task. You might replicate data to back up the data or perform offline reporting. You can replicate data in Oracle objects to databases or flat files.

A Data Replication task can replicate data from one or more Oracle objects. When you configure the task, you can replicate all available objects through the selected connection, or you can select objects for replication by including or excluding a set of objects.

You can also exclude rows and columns from the Data Replication task. Associate a schedule with a Data Replication task to specify when and how often the task runs.

When you replicate Oracle sources, you can replicate all current rows in the Oracle source. The names of source tables and fields can contain at most 30 characters.

For example, the Data Replication task creates a column name in an Oracle database based on the following 40-character field name:

TenLetters1234567890TenLettersXXXXXXXXXX

The Data Replication task truncates the column name to the first 30 characters:

TenLetters1234567890TenLetters

If the truncation causes duplicate column names, the Data Replication task replaces the last character of the duplicate column names with sequential numbers. The Data Replication task also replaces the last character of duplicate table names from the same task.

23

Data Replication Source PropertiesWhen you replicate a source object to a database, the Data Replication task replicates the data to a database table with the same name as the source object.

The following table describes the Oracle source properties in a Data Replication task:

Property Description

Source Connection Name of the active source connection. Select a source connection or create a new connection.

Objects to Replicate Source objects that you can replicate. You can choose from the following options to replicate the objects:- All Objects- Include Objects- Exclude Objects

If an error occurs while processing an object

Determines the execution or termination of the process when an error occurs.

Data Replication Target PropertiesWhen you replicate data to a database target, the Data Replication task truncates the table name in the target database if the source object name exceeds 30 characters.

The following table describes the Oracle target properties in a Data Replication task:

Property Description

Connection Name of the target connection. Select a target connection or create a new connection.

Target Prefix String that prefixes the source object names to create names for the target objects in the target.Note: For more information, see "Truncating Table Names" in Deploy.

Load Type Replicates data from Oracle to other applications in full load.

Delete Options Not Applicable.

Commit size Used for the Data Replication task for all the runs. Defines the number of rows to commit. If you do not specify a value, the Secure Agent uses the default value 10000.

Full LoadFor a full load, the Data Replication task replicates the data for all rows of the source objects in the task. Each time the task runs, the Data Replication task truncates the target database tables or flat file and performs a full data refresh from the source.

24 Chapter 5: Data Replication Tasks

Rules and Guidelines for Oracle Sources and Targets

Use the following rules and guidelines for Oracle sources and targets in a Data Replication task:

• You cannot configure multiple Data Replication tasks to replicate the same source object to the same target object.For example, you cannot configure two Data Replication tasks to write Salesforce Account data to the SF_ACCOUNT Oracle database table.

• You can use database tables, synonyms, or views as sources and targets.

• If you configure a Data Replication task to replicate all objects from the Public schema and the schema contains synonyms, the task might fail. The task fails when the user account for the Oracle connection does not have the Select privilege on the synonyms in the Public schema. The task also fails if the synonym names do not begin with a letter or underscore (_).

• If you replicate timestamp data to an Oracle database, the Data Replication task truncates fractional seconds to the second.For example, the Data Replication task truncates 12:52:47.58 to 12:52:47.

Rules and Guidelines for Oracle Sources and Targets 25

C H A P T E R 6

TroubleshootingThis chapter includes the following topics:

• Troubleshooting Overview, 26

• Troubleshooting an Oracle Connection, 26

• Troubleshooting a Data Synchronization Task, 27

• Troubleshooting a Data Replication Task, 27

Troubleshooting OverviewUse the following sections to troubleshoot errors in Oracle Connector. For a list of common error messages and possible solutions, see the Informatica Cloud Community article, "Troubleshooting: Common Error Messages".

Troubleshooting an Oracle ConnectionA task that uses an Oracle connection runs slower. However, an Oracle connection runs fast when you use an ODBC connection for Oracle.

The default array size for Oracle Connector is 60,000 bytes. You might optimize performance of Oracle Connector by increasing the array size. To increase the array size, you can configure the following custom configuration properties for the Secure Agent:

• Type: Tomcat, Name: ODBCOptimizeRead, Value: Yes

• Type: Tomcat, Name: OdbcOracleDefaultArraySize, Value: <number of bytes>

For example:

• Type: Tomcat, Name: ODBCOptimizeRead, Value: Yes

• Type: Tomcat, Name: OdbcOracleDefaultArraySize: Value: 70000

Note: The OdbcOracleDefaultArraySize custom configuration property does not optimize performance for custom SQL queries.

26

Troubleshooting a Data Synchronization Task"Error Log Table Name Prefix" occurs which specifies table name prefix for a relational error log.

Oracle has a 30 character limit for table names. The task fails if a table name exceeds 30 characters.

Troubleshooting a Data Replication Task[DataDirect][ODBC Oracle Wire Protocol driver]Fractional truncation. Error in parameter <number>.

The database driver issues a warning message if a Data Replication task replicates all Salesforce objects and tries to write a null value to a numeric field of an Oracle database.

An error message appears while configuring the target for the Data Replication task.

You cannot configure multiple Data Replication tasks to replicate the same source object to the same target object.

For example, you cannot configure two Data Replication tasks to write Salesforce Account data to the SF_ACCOUNT Oracle database table. An error appears when you select the same target connection and target object that is used by another Data Replication task.

If you replicate specific objects for the source connection, the following error appears: Duplicate data replication task for <object name> object with a target prefix of <target prefix>.

An error occurs when you run two Data Replication tasks to replicate two objects whose target prefixed name is the same. You must change the target connection, enter a different target prefix or remove the object from the task.

To write data from sources with the same name to different target objects in the same target connection, you must configure different target prefixes.

If you replicate all objects for the source connection, the following error appears: Duplicate Data Replication Task.

An error occurs when you run two Data Replication tasks to replicate the same object from the same source to the same target with the same target prefix. You must change the target or enter a different target prefix.

Numeric data is loaded incorrectly when you run a Data Replication Task that writes Oracle data to a flat file.

When a Data Replication task writes Oracle data with the Number data type to a flat file with the scale as 0, the number is rounded with a precision of 15. The Data Replication application converts the Number data type to Double (15).

To prevent rounding, specify a scale other than 0 for the source data type. When you specify a non-zero scale, rounding will not occur because the Data Replication application converts the Number data type to Decimal.

Troubleshooting a Data Synchronization Task 27

Index

CCloud Application Integration community

URL 6Cloud Developer community

URL 6configuring key range

partitioning 18

Ddata filters

advanced 15rules and guidelines 15simple 15

Data Replication rules and guidelines 25target properties 24overview 23source properties 24sources and targets 25

Data Replication task full load 24

Data Synchronization task sources 13targets 14

database sources rules and guidelines 14

database targets rules and guidelines 14

IInformatica Cloud

community article 26user guide 8

Informatica Cloud Community URL 6

Informatica Cloud web site URL 6

Informatica Global Customer Support contact information 7

OOracle connections

overview 10properties 10rules and guidelines 11

Oracle Connector example 9overview 8

Oracle mapping source properties 16target properties 19

PPartitioning

key range 17pushdown optimization

functions 21

Ttroubleshooting

Data Replication task 27Data Synchronization task 27Oracle connection 26overview 26

trust site description 7

28