Dataguard LNS进程10g到12c的演变
公司生产库11gR2 DataGuard报出错误，显示LNS无法将日志传输到备库上。
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Wed Jul 18 14:30:27 2018 LNS: Attempting destination LOG_ARCHIVE_DEST_3 network reconnect (3135) LNS: Destination LOG_ARCHIVE_DEST_3 network reconnect abandoned Error 3135 for archive log file 2 to 'xxxstd2' Errors in file /u01/app/oracle/diag/rdbms/xxxx/promstd1/trace/xxxx_nsa3_77487.trc: ORA-03135: connection lost contact LNS: Failed to archive log 2 thread 1 sequence 2624 (3135) |
查看trace xxxx_nsa3_77487.trc
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*** 2018-07-18 14:35:58.062 NSS3 is not running anymore. *** 2018-07-18 14:35:58.062 7977 krsu.c Reusing NSA3 ... *** 2018-07-18 14:35:58.062 8040 krsu.c Netserver NSA3 [pid 77487] for mode ASYNC has been re-initialized Performing a channel reset to ignore previous responses Successfully reused NSA3 [pid 77487] for dest xxxstd2 mode ASYNC ocis=0x7f318f912be0 |
里面提及了NSS、NSA，之前没有注意过这些进程， 那么它们的用途是什么？ Oracle 11gR1及之前版本 Oracle
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