# Toad for Oracle freezes after clicking "Connect"

**URL:** <https://forums.toadworld.com/t/toad-for-oracle-freezes-after-clicking-connect/26525>\
**Category:** Toad for Oracle & DevOps Toolkit\
**Created:** [August 28, 2013, 1:35pm UTC](https://forums.toadworld.com/t/toad-for-oracle-freezes-after-clicking-connect/26525 "2013-08-28T13:35:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rbuch](https://avatars.discourse-cdn.com/v4/letter/r/fbc32d/32.png) [@rbuch](https://forums.toadworld.com/u/rbuch)\
**Post date:** [August 28, 2013, 1:35pm UTC](https://forums.toadworld.com/t/toad-for-oracle-freezes-after-clicking-connect/26525/1 "2013-08-28T13:35:08Z")

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I just spent most of my day troubleshooting this problem.

to reproduce:

Open Toad  
Click “New Connection”  
Enter **Direct** Connection: \*\*Host, Port, SID \*\*(tried connecting by host name or IP)  
Connect Using: **OraClient11g\_home1** (also tried “Instant client 11.2.0.1.0”)  
click “Connect”  
[FREEZE]

Troubleshooting i’ve done:

1. 

I am able to telnet to that host:port

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netstat -a tells me that the connection to that host:port is **ESTABLISHED** (by TOAD)

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I profiled using Process Monitor, and i can see that TCP Send from: MyMachine:52302 \> [host.domain.com](http://host.domain.com):port is a **SUCCESS**

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i am also able to connect instantly using Oracle Sql Developer

1. 

- more developers at this location have this same exact problem.
- some developers are able to connect no problem.

1. 

i am using Toad for Oracle 11.0, but i also installed 12.0 trial version to get the same problem

\*\*It appears to me that Toad is doing something after establishing a TCP connection on the UI thread, but i haven’t been able to figure out what that is… \*\*