# Can't select Insalled Client (connection using) drop box

**URL:** <https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381>\
**Category:** Toad for Oracle & DevOps Toolkit\
**Created:** [November 24, 2018, 8:22am UTC](https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381 "2018-11-24T08:22:06Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![quandungleonenote](https://avatars.discourse-cdn.com/v4/letter/q/c89c15/32.png) [@quandungleonenote](https://forums.toadworld.com/u/quandungleonenote)\
**Post date:** [November 24, 2018, 8:22am UTC](https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381/1 "2018-11-24T08:22:06Z")

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My TOAD version is 12.9.0.71

I have problem when selecting Oracle Home drop box. List box is disappear

 ![image](https://global.discourse-cdn.com/quest/original/2X/6/620f13002c5973f99542fde5771132241fb42cc5.png)

I can't find the solution, could you please help

QUAN

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**Author:** ![quandungleonenote](https://avatars.discourse-cdn.com/v4/letter/q/c89c15/32.png) [@quandungleonenote](https://forums.toadworld.com/u/quandungleonenote)\
**Post date:** [November 24, 2018, 9:13am UTC](https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381/2 "2018-11-24T09:13:38Z")

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And Edit button also is DISABLE

 ![image](https://global.discourse-cdn.com/quest/original/2X/c/c946a560a34f2280c073e653215a37fcc47d9a16.png)  
(disalbe)

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**Author:** ![JohnDorlon](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/johndorlon/32/9997_2.png) [@JohnDorlon](https://forums.toadworld.com/u/JohnDorlon)\
**Post date:** [November 27, 2018, 2:23pm UTC](https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381/3 "2018-11-27T14:23:45Z")

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Do you have an Oracle client installed on your computer?  
If not, you need one. It must have the same bitness (32/64) as Toad.  
It also needs to be in the system path.

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**Author:** ![quandungleonenote](https://avatars.discourse-cdn.com/v4/letter/q/c89c15/32.png) [@quandungleonenote](https://forums.toadworld.com/u/quandungleonenote)\
**Post date:** [November 28, 2018, 6:51am UTC](https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381/4 "2018-11-28T06:51:48Z")

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HI Jdorlon,

I have 3 oracle\_clients already

 ![image](https://global.discourse-cdn.com/quest/original/2X/5/5566a9e930b5ad5faf06e36c6761dcfe58dd7a99.png)

System path already set ORACLE\_HOME

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**Author:** ![JohnDorlon](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/johndorlon/32/9997_2.png) [@JohnDorlon](https://forums.toadworld.com/u/JohnDorlon)\
**Post date:** [November 28, 2018, 1:29pm UTC](https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381/5 "2018-11-28T13:29:01Z")

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I can’t tell from your screen shot - have you already made one connection in Toad?

All connections must use the same oracle client, so when a connection is made, the box goes disabled.

I am not sure why the dropdown is so short though - it should show the already selected oracle client, just disabled after a connection is made.

To switch to a different oracle client, close Toad and use the dropdown to select an oracle client before you make a connection.

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<div class="post-metadata">

**Author:** ![quandungleonenote](https://avatars.discourse-cdn.com/v4/letter/q/c89c15/32.png) [@quandungleonenote](https://forums.toadworld.com/u/quandungleonenote)\
**Post date:** [December 14, 2018, 4:37am UTC](https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381/6 "2018-12-14T04:37:19Z")

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> [@JohnDorlon](#):
>
> To switch to a different oracle client, close Toad and use the

HI @JohnDorlon,

Connected or without connect that dropbox also very shot and can't select from that dropbox

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**Author:** ![JohnDorlon](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/johndorlon/32/9997_2.png) [@JohnDorlon](https://forums.toadworld.com/u/JohnDorlon)\
**Post date:** [December 14, 2018, 1:45pm UTC](https://forums.toadworld.com/t/cant-select-insalled-client-connection-using-drop-box/44381/7 "2018-12-14T13:45:08Z")

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I think it has to do with your screen settings but I can’t reproduce it. Try changing your font size/screen magnification to 100% if it is on something else.

Also, if you close all connections in Toad, then you can use the “Edit Login Record” window to change the Oracle client there. The dropdown is disabled when you have at least one connection open.