Find Minimum Heap Memory Open windows command prompt and then enter the following command. javaw -XX:+PrintFlagsFinal | find “InitialHeapSize” Ouput Find Maximum Heap Memory Open windows command prompt and then enter the following command. javaw -XX:+PrintFlagsFinal | find “MaxHeapSize” Output Find ThreadStackSize , HeapSizePerGCThread Memory Open windows command prompt and then enter the following command. […]
Oracle query to find alphanumeric data in column
Sample Data SELECT ‘3874’ col FROM DUAL UNION ALL SELECT ’74’ col FROM DUAL UNION ALL SELECT ‘123’ col FROM DUAL UNION ALL SELECT ’22FRE’ col FROM DUAL UNION ALL SELECT ‘ABCD’ col FROM DUAL UNION ALL SELECT ‘AB33FRE’ col FROM DUAL Query Syntax SELECT COLUMN_NAME FROM TABLE_NAME WHERE REGEXP_LIKE(COLUMN_NAME,'[[:alpha:]]’) AND REGEXP_INSTR(COLUMN_NAME,'[0-9]’)>0; Output COLUMN_NAME 22FRE […]
How to Create a JAR file in Linux
Create a Jar File Created 3 sample files as file1.txt, file2.txt and file3.txt -bash-4.1$ ls file1.txt file2.txt file3.txt -bash-4.1$ jar -cvf test.jar * added manifest adding: file1.txt(in = 5) (out= 7)(deflated -40%) adding: file2.txt(in = 5) (out= 7)(deflated -40%) adding: file3.txt(in = 5) (out= 7)(deflated -40%) -bash-4.1$ ls file1.txt file2.txt file3.txt test.jar Unjar a Jar […]
Start or Stop Oracle XE in Linux
Login to Linux Server as a Root user $sudo su – Root <Start Oracle XE Service> $service oracle-xe start <Stop Oracle XE service> $service oracle-xe stop
How to open popup window in javascript
Sometimes we need to open new popup window (browser) through javascript without disturbing main window. Popup windows are different to simply opening a new browser window. Here I am sharing different types of popup windows with different properties. Popup window javascript syntax window.open(“url”, “window-Name”, “window-Features”); url: Page url to open new windows, window-Name : name […]
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How to delete folder in GitHub repository and local git repository
Sometimes we want to delete folders from GitHub but there is no option in GitHub to delete folder directly. If you want to delete folder from GitHub then we need to open the folder and delete all files one by one and then the folder will be automatically disappeared / deleted. In git repository, the […]
How to install google chrome browser in Ubuntu
By default Ubuntu linux mint having Mozilla Firefox browser so no need to install it externally but google chrome browser will not be installed by default along with Ubuntu installation so we need to install externally by download from google website. Both browsers are very famous, useful and important, without these browsers no system and […]
Version 1.7.0_67 of the JVM is not suitable for this product. Version 1.8 or greater is required
Eclipse Jee 2018-09 will be launched by using java 1.8 and above. So we need to install java 1.8 or above versions, either 32 bit or 64 bit according your system supports. After installing, you need to set system environment PATH variable of JDK path like C:\Program Files\Java\jdk<version>\jre\bin Error Screen Go to –> Right Click […]
