Exceptions in Informatica

Informatica Exceptions – 1

1. While doing “Generate SQL” in Source Qualifier and try to validate it, getting below error.

“Query should return exactly n field(s) to match field(s) projected from the Source Qualifier” Where n is the number of fields projected from the Source Qualifier.

Possible reasons for this to occur are:

1.    The sequence of ports wrong

2.    The number of ports in the transformation may be more/less.

3.    Sometimes you will have the correct number of ports and in correct order too but even then you might face this error in that case make sure that Owner name and Schema name are specified correctly for the tables used in the Source Qualifier Query.

4.    E.g., TC_0002.EXP_AUTH@TIMEP

2. When an Oracle table is used, getting below error

“[/export/home/build80/zeusbuild/vobs/powrmart/common/odl/oracle8/oradriver.cpp] line [xxx]”

Where xxx is some line number mostly 241, 291 or 416.

Possible reasons are

Use Data Direct Oracle ODBC driver instead of the driver “Oracle in

If the table has been imported using the Oracle drivers which are not supported, then columns with Varchar2 data type are replaced by String data type and Number columns are imported with precision Zero(0).

3. below error while trying to save a Mapping.

Unexpected Condition Detected Warning: Unexpected condition at: statbar.cpp: 268 Contact Informatica Technical Support for assistance

When there is no enough memory in System this happens. To resolve this we can either

1.    Increase the Virtual Memory in the system

2.    If continue to receive the same error even after increasing the Virtual Memory, in Designer, go to Tools->Options, go to General tab and clear the “Save MX Data” option.

Informatica Exceptions – 2

1. When Session fails in informatica with the below error message. 

“FATAL ERROR: Caught a fatal signal/exception

FATAL ERROR: Aborting the DTM process due to fatal signal/exception.”

There might be several reasons for this. One possible reason could be the way the function SUBSTR is used in the mappings, like the length argument of the SUBSTR function being specified incorrectly.

Example: 

IIF (SUBSTR (MOBILE_NUMBER, 1, 1) = ‘9’, SUBSTR (MOBILE_NUMBER, 2, 24), MOBILE_NUMBER)

in this example MOBILE_NUMBER is a variable port and is 24 characters long. When the field itself is 24 char long, the SUBSTR starts at position 2 and go for a length of 24 which is the 25th character.

To solve this, correct the length option so that it does not go beyond the length of the field or avoid using the length option to return the entire string starting with the start value.

Example: 

In this example modify the expression as follows: 

IIF(SUBSTR(MOBILE_NUMBER, 1, 1) = ‘9’, SUBSTR(MOBILE_NUMBER, 2, 23), MOBILE_NUMBER)

OR

IIF(SUBSTR(MOBILE_NUMBER, 1, 1) = ‘9’, SUBSTR(MOBILE_NUMBER, 2), MOBILE_NUMBER).

2. The following error can occur at times when a session is run

“TE_11015 Error in xxx: No matching input port found for output port OUTPUT_PORT TM_6006 Error initializing DTM for session…”

Where xxx is a Transformation Name.

This error will occur when there is corruption in the transformation. To resolve this do one of the following: * Recreate the transformation in the mapping having this error.

3. At times you get the below problems,

1. When opening designer, you get “Exception access violation”, “Unexpected condition detected”.

2. Unable to see the navigator window, output window or the overview window in designer even after toggling it on.

3. Toolbars or checkboxes are not showing up correctly.

These are all indications that the pmdesign.ini file might be corrupted. To solve this, following steps need to be followed.

1. Close Informatica Designer 2. Rename the pmdesign.ini (in c:\winnt\system32 or c:\windows\system). 3. Re-open the designer.

When PowerMart opens the Designer, it will create a new pmdesign.ini if it doesn’t find an existing one. Even reinstalling the PowerMart clients will not create this file if it finds one.

Informatica Exceptions – 3

1. Occasions where sessions fail with the following error in the Workflow Monitor: 

“First error code [36401], message [ERROR: Session task instance [session XXXX]: Execution terminated unexpectedly.] “

Where XXXX is the session name.

The server log/workflow log shows the following: 

“LM_36401 Execution terminated unexpectedly.”

To determine the error do the following: 

a. if the session fails before initialization and no session log is created look for errors in Workflow log and pmrepagent log files.

b. If the session log is created and if the log shows errors like

“Caught a fatal signal/exception” or

“Unexpected condition detected at file [xxx] line yy”

Then a core dump has been created on the server machine. In this case Informatica Technical Support should be contacted with specific details. This error may also occur when the PowerCenter server log becomes too large and the server is no longer able to write to it. In this case a workflow and session log may not be completed. Deleting or renaming the PowerCenter Server log (pmserver.log) file will resolve the issue.

2. Given below is not an exception but a scenario which most of us would have come across.

Rounding problem occurs with columns in the source defined as Numeric with Precision and Scale or Lookups fail to match on the same columns. Floating point arithmetic is always prone to rounding errors (e.g. the number 1562.99 may be represented internally as 1562.988888889, very close but not exactly the same). This can also affect functions that work with scale such as the Round() function.To resolve this do the following:

1.    Select the Enable high precision option for the session.

2.    Define all numeric ports as Decimal data type with the exact precision and scale desired. When high precision processing is enabled the PowerCenter Server support numeric values up to 28 digits. However, the tradeoff is a performance hit (actual performance really depends on how many decimal ports there are).

Oracle Exceptions in Informatica

Normally, a fatal Oracle error may not be registered as a warning or row error and the session may not fail, conversely a non-fatal error may cause a PowerCenter session to fail.This can be changed with few tweaking in

A. Oracle Stored Procedure,

B. The OracleErrorActionFile, and

C. Server Settings

Let us see this with an example.

An Oracle Stored Procedure under certain conditions returns the exception NO_DATA_FOUND. When this exception occurs, the session calling the Stored Procedure does not fail.

Adding an entry for this error in the ora8err.act file and enabling the OracleErrorActionFile option does not change this behavior (Both ora8err.act and OracleErrorActionFile are discussed in later part of this blog).

When this exception (NO_DATA_FOUND) is raised in PL/SQL it is sent to the Oracle client as an informational message not an error message and the Oracle client sends this message to PowerCenter. Since the Oracle client does not return an error to PowerCenter the session continues as normal and will not fail.

A. Modify the Stored Procedure to return a different exception or a custom exception. A custom exception number (only between -20000 and -20999) can be sent using the raise_application_error PL/SQL command as follows:

raise_application_error (-20991,’ has raised an error’, true);

Additionally add the following entry to the ora8err.act file:

20991, F

B. Editing the Oracle Error Action file can be done as follows:

1. Go to the server/bin directory under the Informatica Services installation directory (8.x) or the Informatica Server installation directory (7.1.x).

E.g.,

For Infa 7.x

C:\Program Files\Informatica PowerCenter 7.1.3\Server\ora8err.act

For Infa 8.x

C:\Informatica\PowerCenter8.1.1\server\bin

2. Open the ora8err.act file.

3. Change the value associated with the error.

“F” is fatal and stops the session.”R” is a row error and writes the row to the reject file and continues to the next row.

Examples:

To fail a session when the ORA-03114 error is encountered change the 03114 line in the file to the following:

03114, F

To return a row error when the ORA-02292 error is encountered change the

02292 line to the following:

02292, R

Note that the Oracle action file only applies to native Oracle connections in the session. If the target is using the SQL*Loader external loader option, the message status will not be modified by the settings in this file.

C. Once the file is modified, following changes need to be done in the server level.