Skip to main content


Showing posts with the label Oracle Tutorial

Troubleshooting Guide: Windows 11 Taskbar Not Showing - How to Fix It

  If your Windows 11 taskbar is not showing, you can try several troubleshooting steps to resolve the issue. Here are some potential solutions you can try:

Oracle 101: How to Get a List of All Tables in Your Database

  Photo by Adrian Lang: T o Get a List of All Tables in Your Oracle Database, you can query the user_tables or all_tables view depending on your privileges. Here's how to do it: Using user_tables view: sql SELECT table_name FROM user_tables; This will give you a list of all tables owned by the current user. Using all_tables view: sql SELECT owner, table_name FROM all_tables; This will give you a list of all tables that you have access to. If you are querying as a privileged user, you will get a list of all tables in the database. Note that in both cases, the table names are returned in uppercase by default. If you want to see the names in their original case, you can use double quotes around the table name, like this: sql SELECT table_name FROM user_tables WHERE table_name = "MyTable"; Also, keep in mind that if you are querying a remote database, you will need to prefix the table name wi

How to solve "Maximum number of nested groups exceeded (max number current number) not retrieving member from entry DN -- probable circular definition." in Orace?

  This error message suggests that the maximum number of nested groups has been exceeded, and as a result, a member could not be retrieved from an entry DN. It also indicates that there might be a circular definition that is causing this issue. In Oracle, there is a limit on the number of nested groups that can exist, which is set to a default value of 50. This limit is in place to prevent infinite loops and circular references, which can cause performance issues and potentially crash the system. When this limit is exceeded, you will receive the error message you mentioned. To resolve this issue, you can try reducing the number of nested groups or reorganizing the groups in a way that eliminates any circular references. You can also increase the maximum number of nested groups allowed by modifying the relevant configuration parameters in your Oracle system. Additionally, you can try reviewing the LDAP configuration and checking for any circular references in the group membership. Remov

How to solve "Unable to allocate memory. Cannot start memberOf plugin" error in Oracle Database?

  The error message "Unable to allocate memory. Cannot start memberOf plugin" in Oracle typically indicates that the system is running out of memory, and as a result, the "memberOf" plugin cannot be started. The "memberOf" plugin is used to provide group membership information to clients in Oracle Directory Server Enterprise Edition (ODSEE). This error can occur when there is insufficient memory available to start the plugin. To resolve this issue, you can try increasing the amount of memory available to the system, either by adding more physical memory to the server, or by adjusting the memory allocation settings in the configuration files. Here are some steps you can take to increase memory: Check the current memory usage of the system using the "free" or "top" commands in the terminal. If the system is running low on memory, try increasing the swap space by creating a swap file. To create a swap file, you can use the "dd" c