When using a PSM Session to login to Oracle databases, the arrow keys do not function. Instead of navigating, they display codes similar to "^[[A" (up) and "^[[B" (down).
This may be seen in version of TPAM lower than 2.5.912.
STATUS: Enhancement Request #6311 has been included in TPAM 2.5.912.
From the TPAM 2.5.912 Release Notes:
"Fixed problem where arrow keys were not working during a session on a SQL Plus system. To use the arrow keys successfully the session must go through a DPA and the DPA must be set to inactive and back to active after the 2.5.912 patch has been applied.