ORA-00020: maximum number of processes (150) exceeded
If you are working with a local copy of oracle and its installed with default settings, You will surely encounter this error. Maximum number of processes (150) exceeded. We have an enterprise application which requires lots of connections at startup. As soon as the applications starts, it consumes all the available connections from Oracle and system generates the above error. The above error clearly suggests that the number of connections must be increased. To increase the number of connections on Oracle you simple need to follow the under listed instructions:
How to increase number of connections in Oracle
You can use the Oracle SQL developer to connect to your current Oracle Installation.
Connect to Oracle database with your credentials.
Open a new query
Copy and paste the under given code in the query box
alter system set processes=1000 scope=spfile;
Press the run button to execute the query.
Once you are done successfully. restart the oracle service from services panel. The connections will reset from 150 to 1000. You can choose an appropriate number of connections according to your needs. This solved my problem and increased the number of connections for Oracle installed in my testing environment. Please make sure you have complete database backup before trying this query. This query is provided as is and windows tech updates is not liable of any loss or damage.
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