[oracle@ogg1 mesg]$ oerr ora 20
00020, 00000, "maximum number of processes (%s) exceeded"
// *Cause: All process state objects are in use.
// *Action: Increase the value of the PROCESSES initialization parameter.
[oracle@ogg1 mesg]$ pwd
/u01/app/oracle/product/11.2/dbhome_1/rdbms/mesg
[oracle@ogg1 mesg]$ grep "00020" *
expus.msg:00020, 00000, "failed to allocate memory of size %lu"
impus.msg:00020, 00000, "long column too large for column buffer size (%lu)"
oraus.msg:00020, 00000, "maximum number of processes (%s) exceeded"
smgus.msg:00020, 00000, "Contention on buffer cache latches was not consuming significant database time."
udeus.msg:00020, 00000, "Data Pump client is incompatible with Data Pump API."
udius.msg:00020, 00000, "Data Pump client is incompatible with Data Pump API."
在oraus.msg中可以找到oerr的说明
