smon 和pmon区分
System Monitor
Process Name: SMON
Max Processes: 1
This process is responsible for instance recovery, if necessary, at instance startup. SMON also cleans up temporary segments that are no longer in use. It also coalesces contiguous free extents in dictionary managed tablespaces that have PCTINCREASE set to a non-zero value.
SMON wakes up about every 5 minutes to perform housekeeping activities. SMON must always be running for an instance.
Process Monitor
Process Name: PMON
Max Processes: 1
This process is responsible for performing recovery if a user process fails. It will rollback uncommitted transactions. PMON is also responsible for cleaning up the database buffer cache and freeing resources that were allocated to a process. PMON also registers information about the instance and dispatcher processes with network listener.
PMON wakes up every 3 seconds to perform housekeeping activities. PMON must always be running for an instance.
[@more@]
Process Name: SMON
Max Processes: 1
This process is responsible for instance recovery, if necessary, at instance startup. SMON also cleans up temporary segments that are no longer in use. It also coalesces contiguous free extents in dictionary managed tablespaces that have PCTINCREASE set to a non-zero value.
SMON wakes up about every 5 minutes to perform housekeeping activities. SMON must always be running for an instance.
Process Monitor
Process Name: PMON
Max Processes: 1
This process is responsible for performing recovery if a user process fails. It will rollback uncommitted transactions. PMON is also responsible for cleaning up the database buffer cache and freeing resources that were allocated to a process. PMON also registers information about the instance and dispatcher processes with network listener.
PMON wakes up every 3 seconds to perform housekeeping activities. PMON must always be running for an instance.
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/22934571/viewspace-1043163/ ，如需转载，请注明出处，否则将追究法律责任。
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SYS/SYSTEM密码丢失、解决
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