ORA-600 [[17182]] "Heap chunk header BAD MAGIC"

got this from metalink.

Doc ID: Note:34779.1 
Subject: ORA-600 [[17182]] "Heap chunk header BAD MAGIC" 
Type: REFERENCE 
Status: PUBLISHED 
Content Type: TEXT/PLAIN 
Creation Date: 29-FEB-1996 
Last Revision Date: 28-FEB-2003 

Note: For additional ORA-600 related information please read [[NOTE:146580.1]] 
PURPOSE: 
This article discusses the internal error "ORA-600 [[17182]]", what it means and possible actions.
The information here is only applicable to the versions listed and is provided only for guidance. 

ERROR: 
ORA-600 [[17182]][[a]][[b]][[c]][[d]][[e]] VERSIONS: versions 7.3.X, 8.1.X and 9.X DESCRIPTION: 
Oracle has detected that the magic number in a memory chunk header has been overwritten. This is
a heap (in memory) corruption and there is no underlying data corruption. The error may occur in the one of the process specific heaps (the Call heap, PGA heap, or session heap) or in the shared heap (SGA). 

FUNCTIONALITY: HEAP MANAGEMENT IMPACT: PROCESS FAILURE MEMORY CORRUPTION, POSSIBLE INSTANCE FAILURE.
NON DATA CORRUPTIVE - No underlying data corruption. 

SUGGESTIONS: Check to see if the issue is reproducable. Check the OS system logs (/var/adm/messages
on Solaris, for example) for any memory corruption and run low level memory tests on the system. If reproducable, send alert.log and trace files to support. Known Issues: Bug 2686597 ORA-600 [[17182]] OCCURS IN SELECT OF LARGE TABLES WITH USING AUTOMATIC PGA
Fixed in 9.2 Bug 2228280 CUSTOMER RECEIVING A NUMBER OF ORA-7445 ORA-600 ERROR Private memory corruption possible with OPTIMIZER_MODE=RULE Fixed in releases 9.0.1.4 and 9.2.0.2 Bug 1542218 OCCASIONAL ORA-600 [[17182]] Fixed in releases 8.1.7.3, 9.0.1.2 and
9.2.0.1