ORA-00020 and Ora-12519 error contineous in 10g Enterprise on Windows 2003

Hello Experts,
I have Oracle 10g installed on windows 2003 server (64 bit), No issue with Storage (1TB) x5450 @3 GHz and 16 GB RAM.
DB size is approx. 9 GB.
We are facing this isue again and again. We tried to restart DB and after some hours we see the same issue.
I check the Processes and session on INIT<SID>.ora file and was confugured to 750 each. I also check the no. of Inactive process (thru SYS login) and it shows me 728-729. Nos. of backgroung processes are 20.
Can some expert show me the path to get success on this issue asap? This is PRODUCTION server and we can not reboot as many times as we can (you understand) :-).
maximum number of processes (%s) exceeded. HELP?????

Thanks for the quick reply,
Here is the output...
MACHINE COUNT(*)
JCLM-PSDATA-S1 19
JCLMPS\JCLM-PSDATA-S1 1
JCLM-psapp-s1 33
JCLM-psapp-s2 19
JCLM-psapp-s3 18
JCLM-psapp-s4 19
JCLM-psapp-s5 17
JCLM-psapp-s6 17
JCLM-psdata-s1 525
JCLM-psrpt-s1 15
JCLM-psrpt-s2 18
MACHINE COUNT(*)
JCLM-pstch-s1 6
JCLM-pstch-s2 7
JCLM-pstch-s3 25
JCLM-pstch-s4 9
15 rows selected.
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bi
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for 64-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Edited by: user1125897 on Sep 13, 2010 7:41 AM

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