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ORA-03120: two-task conversion routine: integer overflow tips

Oracle Error Tips by Stephanie F.

 

The Oracle docs note this on the ORA-03120 error:

ORA-03120 two-task conversion routine: integer overflow
 
Cause: An integer value in an internal Oracle structure overflowed when being sent or received over a heterogeneous connection. This can happen when an invalid buffer length or too great a row count is specified. It usually indicates a bug in the user application. 

Action: Check parameters to Oracle calls. If the problem recurs, reduce all integer parameters, column values not included, to less than 32767.

Internet sources indicate that ORA-03120 is associated with bug 5671074 on Oracle Enterprise Edition; Version 9.2.0.8, occurring on any platform:

After applying the 9.2.0.8 patchset, compilation of functions and/or materialized view refreshes that reference remote databases via database links start failing with:

ORA-04052: error occurred when looking up remote object OMS.PREMISE@JEAUSER_OMPR_L.WORLD
ORA-00604: error occurred at recursive SQL level 1
ORA-03120: two-task conversion routine: integer overflow
ORA-02063: preceding line from
JEAUSER_OMPR_L

Bug 5671074 "ORA-4052/ORA-3106 on Create / Refresh of Materialized View", can cause this problem. Contrary to the bug abstract and description, this bug does not just apply to materialized view creation and refresh. It can occur for any PL/SQL that references a remote object via database link where the 'Endianness' of the two platforms differs. If one platform is 'Big-Endian', and another platform is 'Little-Endian', then this bug can be triggered between them.  A list of the endianness of different platforms can be obtained from the following query (note that the v$transportable_platform view is only available in 10.1 and above):



SQL> select * from v$transportable_platform;

PLATFORM_ID PLATFORM_NAME ENDIAN_FORMAT
----------- ------------------------------ --------------
1 Solaris[tm] OE (32-bit) Big
2 Solaris[tm] OE (64-bit) Big
7 Microsoft Windows NT Little
10 Linux IA (32-bit) Little
6 AIX-Based Systems (64-bit) Big
3 HP-UX (64-bit) Big
5 HP Tru64 UNIX Little
4 HP-UX IA (64-bit) Big
11 Linux IA (64-bit) Little
15 HP Open VMS Little
8 Microsoft Windows IA (64-bit) Little
9 IBM zSeries Based Linux Big
13 Linux 64-bit for AMD Little
16 Apple Mac OS Big
12 Microsoft Windows 64-bit for AMD Little

To resolve ORA-03120, this solution is given:

To implement the solution, it will be necessary to apply the one-off patch for Bug 5671074 to the 9.2.0.8 database. One-off patches to 9.2.0.8 for most platforms are already available for download on MOSC. Bug 5671074 to the 9.2.0.8 database. One-off patches to 9.2.0.8 for most platforms are already available for download on MOSC.


You may also find this link helpful, as it references ORA-03120


 

 

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