Solve Oracle ORA-00020 problem


ENLARGE PROCESS:
1) Login SQLPLUS as sysdba:

alter system set processes=300 scope=spfile sid='*';
alter system set sessions=450 scope=spfile sid='*';

2) restart server


KILL SESSION

1) find out session information


SELECT s.inst_id,
       s.sid,
       s.serial#,
       p.spid,
       s.username,
       s.program
FROM   gv$session s
       JOIN gv$process p ON p.addr = s.paddr AND p.inst_id = s.inst_id
WHERE  s.username='' AND s.MACHINE='';

2) kill session:

ALTER SYSTEM KILL SESSION 'sid,serial#,@inst_id';


restart Database

1) user oracle user, stop database:
srvctl stop database -d -o immediate

2) start database
srvctl start database -d


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