Queries That Access a Local Synonym Which Points to a Remote Database Error With ORA-03106 or ORA-03020 Two-Task Errors (Doc ID 416857.1)

Last updated on SEPTEMBER 04, 2015

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 to 10.2.0.1 [Release 9.2 to 10.2]
Information in this document applies to any platform.

Symptoms

After applying an interim patch to an <leo_highlight leohighlights_underline="true" leohighlights_url_bottom="http%3A//shortcuts.thebrowserhighlighter.com/leonardo/plugin/highlights/3_2/tbh_highlightsBottom.jsp?keywords%3Doracle%26domain%3Dml3-awiz.us.oracle.com" leohighlights_url_top="http%3A//shortcuts.thebrowserhighlighter.com/leonardo/plugin/highlights/3_2/tbh_highlightsTop.jsp?keywords%3Doracle%26domain%3Dml3-awiz.us.oracle.com" leohighlights_keywords="oracle" onmouseout="leoHighlightsHandleMouseOut('leoHighlights_Underline_0')" onmouseover="leoHighlightsHandleMouseOver('leoHighlights_Underline_0')" onclick="leoHighlightsHandleClick('leoHighlights_Underline_0')" id="leoHighlights_Underline_0" style="border-bottom: 2px solid rgb(255, 255, 150); background-color: transparent; background-image: none; background-repeat: repeat; background-attachment: scroll; background-position: 0% 50%; -moz-background-size: auto auto; cursor: pointer; display: inline; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;">Oracle Home on a Unix or Linux server, a query that had previously worked begins failing with
ORA-03106 "fatal two-task communication protocol error" and / or
 ORA-03120 "two-task conversion routine: integer overflow" errors.

The query selects from a local synonym, which in turn selects from a remote table via a database link.

Cause

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