问题现象

客户反馈，数据库近期出现 ORA-03137: malformed TTC packet from client rejected: [3146] [4] [] [] [] [] [] [] 报错，请求我方协助排查原因

问题分析

根据ORA-03137指向的trc文件分析

	Trace file /app/oracle/base/diag/rdbms/XXXXXXX2/trace/XXXX_ora_XXXXX.trc
	Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
	Build label:    RDBMS_12.2.0.1.0_LINUX.X64_170125
	ORACLE_HOME:    /app/oracle/product/12.2.0/db_1
	System name:	Linux
	Node name:	P1AUXDB2
	Release:	3.10.0-957.el7.x86_64