Dear Experts , please help on the below ORA reported on the physical standby ( ADG) oracle 11.2.0.3.0 . *ALERT LOG ENTRY:* Sat May 31 05:11:01 2014 Errors in file /oracle/app/product/11.2.0/diag/rdbms/xxxxxxrpt/xxxxxx/trace/xxxxxx_ *m000_4524.trc:* ORA-16000: database open for read-only access Sat May 31 05:11:10 2014 Errors in file /oracle/app/product/11.2.0/diag/rdbms/xxxxxxrpt/xxxxxx/trace/xxxxxx_ *m000_4557.trc:* ORA-16000: database open for read-only access Sat May 31 05:12:04 2014 *TRACE FILE ENTRY:* [oracle@reporting-srvr trace]$ cat /oracle/app/product/11.2.0/diag/rdbms/xxxxxxrpt/xxxxxx/trace/xxxxxx_m000_4557.trc Trace file /oracle/app/product/11.2.0/diag/rdbms/xxxxxxxx/xxxxxxx/trace/xxxxxxx_m000_4557.trc Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, Automatic Storage Management, OLAP, Data Mining and Real Application Testing options ORACLE_HOME = /oracle/app/product/11.2.0/db_1 System name: Linux Node name: reporting-srvr Release: 2.6.18-238.el5 Version: #1 SMP Sun Dec 19 14:22:44 EST 2010 Machine: x86_64 Instance name: xxxxxx Redo thread mounted by this instance: 1 Oracle process number: 42 Unix process pid: 4557, image: oracle@reporting-srvr (M000) *** 2014-05-31 05:11:09.495 *** SESSION ID:(770.3233) 2014-05-31 05:11:09.496 *** CLIENT ID:() 2014-05-31 05:11:09.496 *** SERVICE NAME:(SYS$BACKGROUND) 2014-05-31 05:11:09.496 *** MODULE NAME:(MMON_SLAVE) 2014-05-31 05:11:09.496 *** ACTION NAME:(JAVAVM JIT slave action) 2014-05-31 05:11:09.496 joez_compile_method beginning compile of method java/security/spec/DSAParameterSpec.getQ Reading CompilerOptions... *** 2014-05-31 05:11:10.832 joxjitexe(1) caught: 16000; Aborting joxjitexe(2) caught: 16000; ORA-16000: database open for read-only access *--* *BR* *Sumit Tyagi* *+91-7829543355*