Slow database access
when logging into the database to test the connection with a conn, if fast, slow client or use tools to connect, you can check the following points
1. The monitor log is too large
listener.org general path: $ ORACLE_HOME \ diag \ tnslsnr \ machine name \ listener \ the trace
lsnrctl Status of (listener the log File)
/ the Oracle / the Oracle / diag / tnslsnr / Master / listener
listens log:
/oracle/oracle/diag/tnslsnr/master/listener/trace/listener.log
connection log:
/oracle/oracle/diag/tnslsnr/master/listener/alert/log.xml
2. check the configuration of DNS nameserver configuration, firewall and network conditions.
3. Update statistics table structure and optimizing SQL statements
If the connection is slow PLsql check the network
if the query is slow table service
can lead problems after AWR report analysis
1. large amount of data, resulting in ineffective implementation plan
2. a full table scan
3. The index is invalid