oracle_opatch: Find running listener more robust - #123
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…ut content, dependencies, and UPI (unique patch ID) differ. These patches have to be rolled back in advance of applying the PSU/RU and must afterwards be installed with the correct version (=UPI). They should however not be rolled back if they are already there with the desired UPI. This helps to write more idempotent playbooks. So there is a new parameter exclude_upi that is evaluated only if state=absent. To keep changes in working code at a minimum the check for UPI could be acquired only by another "opatch lspatches" that costs some seconds.
Oracle_opatch searches the running listener with: ```ps -elf | grep "[0-9] $ORACLE_HOME/bin/tnslsnr"``` ...then splits the line by spaces and takes the last but one field. This does not work for a "ps -ef" result like this: ```0 S oracle 16921 1 0 80 0 - 43851 ep_pol 21:58 ? 00:00:00 /u01/app/oracle/product/12.1.0.2/ee/bin/tnslsnr LISTENER /dev/null -inherit``` In this case "linelist[-2]" deliveres "/dev/null" instead of the LISTENER name. My fix is to search the ps line for the listener executable and use the next field.
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This PR should contain commit 42e65ec only. But it includes other unrelated commits.
This is the commit message:
Oracle_opatch searches the running listener with:
ps -elf | grep "[0-9] $ORACLE_HOME/bin/tnslsnr"...then splits the line by spaces and takes the last but one field.
This does not work for a "ps -ef" result like this:
0 S oracle 16921 1 0 80 0 - 43851 ep_pol 21:58 ? 00:00:00 /u01/app/oracle/product/12.1.0.2/ee/bin/tnslsnr LISTENER /dev/null -inheritIn this case "linelist[-2]" deliveres "/dev/null" instead of the LISTENER
name. My fix is to search the ps line for the listener executable and use
the next field.