zxaptrxmigupd.sql is filling up APPS_TS_TX_DATA tablespace and is running for more than 16 hours now

Issue:
This upgrade script zxaptrxmigupd.sql is filling up APPS_TS_TX_DATA tablespace and is running for more than 16 hours now. Twice this script has exhausted allocated disk space and memory

Background:

I am upgrading EBS 11.5.10.2 to 12.1.1. After merging several preinstall patches, master driver u6678700.drv is being executed. Current phase of upgrade driver is (current phase=A255).

Research:

Current rel;evant file versions are:

$Header zxaptrxmigupd.sql 120.47.12010000.10 2011/07/20 21:49:46 ssohal ship $
$Header zxaptrxhotupd.sql 120.9.12010000.9 2011/07/20 21:54:00 ssohal ship $
$Header zxaptrxmigupd.sql 120.47.12010000.10 2011/07/20 21:49:46 ssohal ship $
$Header zxmigtrxdemdpkgb.pls 120.34.12010000.16 2012/05/31 11:27:43 ssohal ship $
$Header zxmigtrxflyapb.pls 120.23.12010000.11 2011/07/20 21:55:41 ssohal ship $
$Header aplnupgb.pls 120.23.12010000.27 2012/03/16 05:34:04 mkmeda ship $
MOS note referred so far and found not relevant to my case are as below.