Unable to create SDO_TIN causing ORA-07445, ORA-13199

Question

Dear experts,
I have Oracle 11.2.0.3 installed on a machine with Windows Server 2008 R2.
Target size of Oracle SGA and PGA memory (MEMORY_TARGET) is 21 474 836 480.
The database is in NOARCHIVELOG mode.
I'm trying to create TIN using sdo_tin data type. The code, showed below, works fine for a certain amount of points (it works upto ~ 5 000 000 points).
DECLARE
tin sdo_tin;
BEGIN
tin := SDO_TIN_PKG.init
'BASE_TIN', 'TIN', 'BLK_TIN', 'blk_capacity=50000',
mdsys.sdo_geometry (3008, 32636, NULL,
mdsys.sdo_elem_info_array (1, 1007, 3),
mdsys.sdo_ordinate_array (671208.722, 3571014.191, 12.447, 678470.293, 3578602.733, 226.409)),
0.0005,
3,
NULL
INSERT INTO base_tin VALUES (tin);
SDO_TIN_PKG.create_tin (tin, 'INPM');
END;
When I run this code for full data set (~27 000 000 points), I get following error in alert.log (after ~1.5 hours of computing):
Exception [type: ACCESS_VIOLATION, UNABLE_TO_WRITE] [ADDR:0x44] [PC:0x146A7E2F0, mdtnmconnect()+76]
Errors in file C:\ORACLE\diag\rdbms\kugioas\kugioas\trace\kugioas_ora_58460.trc (incident=55960):
ORA-07445: exception encountered: core dump [mdtnmconnect()+76] [ACCESS_VIOLATION] [ADDR:0x44] [PC:0x146A7E2F0] [UNABLE_TO_WRITE] []
ORA-13199: Error in mdtngt_edge
ORA-00308: cannot open archived log 'C:\ORACLE\REDO\ARC0000003655_0682278972.0001'
ORA-27041: unable to open file
OSD-04002: unable to open file
O/S-Error: (OS 2) The system cannot find the file specified.
What would be possible workaround?
Please help.

Answer 1

Hi,
You mentioned you're in NOARCHIVELOG mode but you're getting an ORA-00308 error. This might be happening if the LOG_ARCHIVE_DEST_n parameter is still pointing to an archive log destination and if the default value for the LOG_ARCHIVE_DEST_STATE_n parameter is set to 'ENABLE'. In this case the database database will still attempt to open the required archive log file during recovery of a long running transaction.
To resolve that issue you could set LOG_ARCHIVE_DEST_STATE_n to 'defer'. See: http://docs.oracle.com/cd/E11882_01/server.112/e25513/initparams124.htm#REFRN10087
However that issue is really just a side effect of having to rollback a long running transaction, so the main problem still exists.
I checked MOS for any mention of mdtnmconnect() or mdtngt_edge. I found two old reports...
Bug 7176267 : ACCESS_VIOLATION WHILE BUILDING A TIN, DEPENDING ON BLOCK SIZE USED
Bug 6606678 : CREATION OF A TIN FAILS WITH ORA-7445 [MDTNMMKEDGE]
... but there doesn't seem to be any conclusion in either of those. If anything it sounds like it might be worth playing around with the blk_capacity parameter to see if it helps (i.e. trying increasing and reducing it).
Have you checked through the kugioas_ora_58460.trc trace file for anything of potential use?
Apart from some basic prototyping I haven't really used SDO_TIN so can't comment much on how to troubleshoot it.
By the way, what's your exact Oracle version - just the base 11.2.0.3 or have you added any patch bundles (if not, then you probably should) as they might help.
John
Edited by: John O'Toole on Apr 30, 2013 9:02 AM