Performance Issue With Forms 11g Using JRE 1.6.0_45 on Windows7

(Doc ID 1986194.1)

Last updated on OCTOBER 31, 2016

Applies to:

Oracle Forms - Version 11.1.2.0.0 and later
Information in this document applies to any platform.

Symptoms

A Forms application has been migrated to 11.1.2.x. In addition the end user Client PCs have been upgraded from Windows XP to Windows7. The Windows upgrade includes:

Windows XP to Windows 7
32 bit to 64 bit OS
Internet Explorer (IE) from 8 to 9
Java Runtime Ennvronment (JRE) 1.6.0_30 to JRE 1.6.0_45

When running the Forms application on the new Client PCs (with same hardware or ever stronger), the Forms applet responds slower.
The issue is replicated from JRE 1.6.0_45 to 1.6.0_71 using IE 9 and/or IE 8. However, performance is good using JRE 1.6.0_35.

The slowness can be seen when repainting/rendering of the Forms canvas and when moving between Form Tab pages.

The Following settings did not help:

Disabling "TCP Window Scaling" on client and server,
Disabling RSS,
Disabling RDC and NetworkThrottlingIndex
Defining JPI_PLUGIN2_NO_HEARTBEAT=1 and GDI vs. direct 3D

Changes

Using JRE versions 1.6.0_45 through to JRE 1.7.0_71 AND Bidrectional (BIDI) environment (e.g. NLS_LANG=HEBREW_ISRAEL.IW8ISO8859P8)

Cause

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