Search for	Example	Results
A single word	`cat`	Topics that contain the word "cat". You will also find its grammatical variations, such as "cats".
A phrase. You can specify that the search results contain a specific phrase.	`"cat food"` (quotation marks)	Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase.

Search for	Operator	Example
Two or more words in the same topic	`AND` `and` `+` (plus symbol) `&` (ampersand)	`cat AND dog` `"cat food"+milk` `"cat food"&"dog food"`
Either word in a topic	`OR` `or` `\|` (pipe)	`cat OR dog` `cat \| dog`
Topics that do not contain a specific word or phrase	`NOT` `not` `!` (exclamation point)	`NOT cat` `! dog`
Topics that contain one string and do not contain another	`^` (caret)	`cat ^ mouse`
A combination of search types	`( )` parentheses	`cat + (dog \| mouse)` `cat \| dog + (! mouse)`

Universal CMDB11.0

Troubleshoot > Troubleshooting Administration > Troubleshooting and Limitations

Troubleshooting and Limitations – UCMDB Server Administration

This section describes troubleshooting and limitations for UCMDB.

If the wrapper.java.additional.10=-XX:+HeapDumpOnOutOfMemoryError parameter is set (it is enabled by default) in the wrapper.conf file, then every time the server fails with an Out of Memory error, it dumps the full memory to the disk. Since the memory contents could be very large, you should delete these files to avoid disk space problems.
Problem: When working in a Firefox browser using Linux, you get an OutOfMemoryError: PermGen space error.

Solution: Follow these steps:
1. Go to the bin directory of the Java installation directory and open the Control Panel.
2. In the Java tab, select View.
3. In the Java runtime environment settings, under Runtime parameters, increase the -XX:MaxPermSize.
Limitation: Unsupported characters in password when UCMDB is used in integrations

When UCMDB is used in integrations, the following characters should not be used in the password:
- All non-ASCII characters (valid ISO 8859/1 characters that are not also ASCII characters)
- The following special characters: the tab character, the space character, and [ \ ] ^ ` { | } ~ " # % & + , / : < = > ? @
Problem: The "User {0} has exceeded the maximum number of login sessions" message is displayed.

Solution: Ensure that you are properly logged out from other sessions on other computers. For example, closing a tab or closing the browser does not immediately close a user session on the server.