搭建oracle12c備機(jī)過程中發(fā)現(xiàn)sqlplus登陸報(bào)錯(cuò)如下：
[xdhsdb@oracle:/oracle]$sqlplus
exec(): 0509-036 Cannot load program sqlplus because of the following errors:
        0509-130 Symbol resolution failed for /oracle/app/oracle/product/12.2.0/dbhome_1/lib/libons.so because:
        0509-136   Symbol CreateIoCompletionPort (number 93) is not exported from
                   dependent module /unix.
        0509-136   Symbol GetQueuedCompletionStatus (number 94) is not exported from
                   dependent module /unix.
        0509-136   Symbol ReadFile (number 95) is not exported from
                   dependent module /unix.
        0509-136   Symbol WriteFile (number 96) is not exported from
                   dependent module /unix.
        0509-026 System error: Error 0
        0509-192 Examine .loader section symbols with the
                 'dump -Tv' command.

因?yàn)楣P者之前是解壓縮tar包的方式安裝oracle的，都沒有問題。搜索了網(wǎng)上都是系統(tǒng)相關(guān)問題
檢查了iocp參數(shù)果然沒有改
[xdhsdb@oracle:/oracle]$lsdev |grep iocp
iocp0      Defined               I/O Completion Ports

修改參數(shù)重啟后解決問題
[xdhsdb@root:/]#chdev -l iocp0 -P -a autoconfig='available';
iocp0 changed

總結(jié)：
因?yàn)樵搨錂C(jī)的rootvg筆者是通過克隆方式拷貝過來的，雖然克隆原機(jī)參數(shù)修改了，但是克隆之后發(fā)現(xiàn)這個(gè)參數(shù)會(huì)被重置為默認(rèn)狀態(tài)。

另外一些系統(tǒng)參數(shù)也需要修改并重啟
chdev -l sys0 -a maxuproc=16384
chdev -l sys0 -a maxbuf=500
文章名稱：aix系統(tǒng)數(shù)據(jù)庫sqlplus登陸報(bào)錯(cuò)處理一例
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